diff --git a/src/main/java/org/cryptomator/ui/removecert/RemoveCertController.java b/src/main/java/org/cryptomator/ui/removecert/RemoveCertController.java
index 283995813..2ac08a02d 100644
--- a/src/main/java/org/cryptomator/ui/removecert/RemoveCertController.java
+++ b/src/main/java/org/cryptomator/ui/removecert/RemoveCertController.java
@@ -2,8 +2,6 @@ package org.cryptomator.ui.removecert;
 
 import org.cryptomator.common.settings.Settings;
 import org.cryptomator.ui.common.FxController;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
 import javafx.fxml.FXML;
@@ -12,8 +10,6 @@ import javafx.stage.Stage;
 @RemoveCertScoped
 public class RemoveCertController implements FxController {
 
-	private static final Logger LOG = LoggerFactory.getLogger(org.cryptomator.ui.removecert.RemoveCertController.class);
-
 	private final Stage window;
 	private final Settings settings;
 
diff --git a/src/main/resources/css/dark_theme.css b/src/main/resources/css/dark_theme.css
index c78de230e..14a5b34f0 100644
--- a/src/main/resources/css/dark_theme.css
+++ b/src/main/resources/css/dark_theme.css
@@ -100,6 +100,7 @@
 
 .label-extra-large {
 	-fx-font-family: 'Open Sans SemiBold';
+	-fx-fill: TEXT_FILL;
 	-fx-font-size: 1.5em;
 }
 
@@ -266,26 +267,6 @@
 	-fx-background-insets: 0, 0 1 0 0;
 }
 
-/*******************************************************************************
- *                                                                             *
- * Alert-Dialogs                                                               *
- *                                                                             *
- ******************************************************************************/
-
-.dialog-pane {
-    -fx-padding: 12px;
-}
-
-.dialog-pane .header-panel {
-	-fx-font-family: 'Open Sans SemiBold';
-	-fx-font-size: 1.2em;
-}
-
-.dialog-pane .content {
-	-fx-font-family: 'Open Sans';
-    -fx-padding: 12 0 12 0;
-}
-
 /*******************************************************************************
  *                                                                             *
  * Vault List                                                                  *
diff --git a/src/main/resources/css/light_theme.css b/src/main/resources/css/light_theme.css
index 6ca831268..88cf6d970 100644
--- a/src/main/resources/css/light_theme.css
+++ b/src/main/resources/css/light_theme.css
@@ -265,26 +265,6 @@
 	-fx-background-insets: 0, 0 1 0 0;
 }
 
-/*******************************************************************************
- *                                                                             *
- * Alert-Dialogs                                                               *
- *                                                                             *
- ******************************************************************************/
-
-.dialog-pane {
-    -fx-padding: 12px;
-}
-
-.dialog-pane .header-panel {
-	-fx-font-family: 'Open Sans SemiBold';
-	-fx-font-size: 1.2em;
-}
-
-.dialog-pane .content {
-	-fx-font-family: 'Open Sans';
-    -fx-padding: 12 0 12 0;
-}
-
 /*******************************************************************************
  *                                                                             *
  * Vault List                                                                  *
diff --git a/src/main/resources/fxml/preferences_contribute.fxml b/src/main/resources/fxml/preferences_contribute.fxml
index c87731e6e..22fda34b4 100644
--- a/src/main/resources/fxml/preferences_contribute.fxml
+++ b/src/main/resources/fxml/preferences_contribute.fxml
@@ -3,18 +3,18 @@
 <?import org.cryptomator.ui.controls.FontAwesome5IconView?>
 <?import org.cryptomator.ui.controls.FormattedLabel?>
 <?import javafx.geometry.Insets?>
+<?import javafx.scene.control.Button?>
 <?import javafx.scene.control.Hyperlink?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.TextArea?>
+<?import javafx.scene.image.Image?>
+<?import javafx.scene.image.ImageView?>
 <?import javafx.scene.layout.HBox?>
+<?import javafx.scene.layout.Region?>
 <?import javafx.scene.layout.StackPane?>
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.shape.Circle?>
-<?import javafx.scene.image.ImageView?>
-<?import javafx.scene.image.Image?>
 <?import javafx.scene.text.Text?>
-<?import javafx.scene.control.Button?>
-<?import javafx.scene.layout.Region?>
 <VBox xmlns:fx="http://javafx.com/fxml"
 	  xmlns="http://javafx.com/javafx"
 	  fx:controller="org.cryptomator.ui.preferences.SupporterCertificateController"
@@ -25,24 +25,24 @@
 	<children>
 		<StackPane VBox.vgrow="NEVER" prefHeight="60" alignment="TOP_CENTER">
 			<VBox alignment="TOP_CENTER" visible="${controller.licenseHolder.validLicense}">
-				<Text styleClass="label-extra-large" text="Thank you for supporting Cryptomator’s open-source development!" wrappingWidth="400" textAlignment="CENTER"/>
+				<Text styleClass="label-extra-large" text="%preferences.contribute.thankYou" wrappingWidth="400" textAlignment="CENTER"/>
 				<ImageView fitHeight="180">
-					<Image url="@../img/supporter_cert_stemp.png"/>
+					<Image url="@../img/supporter_cert_stamp.png"/>
 				</ImageView>
 				<FormattedLabel format="%preferences.contribute.registeredFor" arg1="${controller.licenseHolder.licenseSubject}" wrapText="true"/>
 				<Region minHeight="12"/>
 				<HBox alignment="BOTTOM_CENTER" spacing="6">
-					<Button fx:id="trashButton" onAction="#didClickRemoveCert">
+					<Button onAction="#didClickRemoveCert">
 						<graphic>
 							<FontAwesome5IconView glyph="TRASH"/>
 						</graphic>
 					</Button>
-					<Button text="Donate" minWidth="100" onAction="#showDonate">
+					<Button text="%preferences.contribute.donate" minWidth="100" onAction="#showDonate">
 						<graphic>
 							<FontAwesome5IconView glyph="DONATE"/>
 						</graphic>
 					</Button>
-					<Button text="Sponsors" minWidth="100" onAction="#showSponsors">
+					<Button text="%preferences.contribute.sponsors" minWidth="100" onAction="#showSponsors">
 						<graphic>
 							<FontAwesome5IconView glyph="SPONSORS"/>
 						</graphic>
@@ -50,14 +50,14 @@
 				</HBox>
 			</VBox>
 			<VBox spacing="12" visible="${!controller.licenseHolder.validLicense}">
-				<HBox spacing="12" alignment="CENTER_LEFT" >
-					<StackPane alignment="CENTER" HBox.hgrow="NEVER">
+				<HBox spacing="12" alignment="CENTER_LEFT">
+					<StackPane HBox.hgrow="NEVER">
 						<Circle styleClass="glyph-icon-primary" radius="24"/>
 						<FontAwesome5IconView styleClass="glyph-icon-white" glyph="HAND_HOLDING_HEART" glyphSize="24"/>
 					</StackPane>
 					<VBox HBox.hgrow="ALWAYS" spacing="6">
 						<Label text="%preferences.contribute.noCertificate" wrapText="true" VBox.vgrow="ALWAYS"/>
-						<Hyperlink text="%preferences.contribute.getCertificate" onAction="#getSupporterCertificate" contentDisplay="LEFT">
+						<Hyperlink text="%preferences.contribute.getCertificate" onAction="#getSupporterCertificate">
 							<graphic>
 								<FontAwesome5IconView glyph="LINK"/>
 							</graphic>
diff --git a/src/main/resources/i18n/strings.properties b/src/main/resources/i18n/strings.properties
index 558086456..a5041b8e8 100644
--- a/src/main/resources/i18n/strings.properties
+++ b/src/main/resources/i18n/strings.properties
@@ -336,6 +336,9 @@ preferences.contribute.registeredFor=Supporter certificate registered for %s
 preferences.contribute.noCertificate=Support Cryptomator and receive a supporter certificate. It's like a license key but for awesome people using free software. ;-)
 preferences.contribute.getCertificate=Don't have one already? Learn how you can obtain it.
 preferences.contribute.promptText=Paste supporter certificate code here
+preferences.contribute.thankYou=Thank you for supporting Cryptomator’s open-source development!
+preferences.contribute.donate=Donate
+preferences.contribute.sponsors=Sponsors
 
 ### Remove License Key Dialog
 removeCert.title=Remove Cert
diff --git a/src/main/resources/img/supporter_cert_stemp.png b/src/main/resources/img/supporter_cert_stamp.png
similarity index 100%
rename from src/main/resources/img/supporter_cert_stemp.png
rename to src/main/resources/img/supporter_cert_stamp.png
diff --git a/src/main/resources/img/supporter_cert_stemp@2x.png b/src/main/resources/img/supporter_cert_stamp@2x.png
similarity index 100%
rename from src/main/resources/img/supporter_cert_stemp@2x.png
rename to src/main/resources/img/supporter_cert_stamp@2x.png