cr mentioned changes

src/main/java/org/cryptomator/ui/preferences/SupporterCertificateController.java

@@ -43,7 +43,11 @@ public class SupporterCertificateController implements FxController {
 		supporterCertificateField.setText(licenseHolder.getLicenseKey().orElse(null));
 		supporterCertificateField.textProperty().addListener(this::registrationKeyChanged);
 		supporterCertificateField.setTextFormatter(new TextFormatter<>(this::removeWhitespaces));
-		settings.licenseKey.addListener(this::licenseKeySettingsChanged);
+		settings.licenseKey.addListener((_, _, newValue) -> {
+			if (newValue == null) {
+				supporterCertificateField.setText(null);
+			}
+		});
 	}
 
 	private TextFormatter.Change removeWhitespaces(TextFormatter.Change change) {
@@ -54,11 +58,6 @@ public class SupporterCertificateController implements FxController {
 		return change;
 	}
 
-	private void licenseKeySettingsChanged(@SuppressWarnings("unused") ObservableValue<? extends String> observable, @SuppressWarnings("unused") String oldValue, String newValue){
-		if(newValue == null)
-			supporterCertificateField.setText(null);
-	}
-
 	private void registrationKeyChanged(@SuppressWarnings("unused") ObservableValue<? extends String> observable, @SuppressWarnings("unused") String oldValue, String newValue) {
 		licenseHolder.validateAndStoreLicense(newValue);
 		if (!licenseHolder.isValidLicense()) {

src/main/resources/fxml/preferences_contribute.fxml

@@ -42,7 +42,7 @@
 							<FontAwesome5IconView glyph="DONATE"/>
 						</graphic>
 					</Button>
-					<Button text="%preferences.contribute.sponsors" minWidth="100" onAction="#showSponsors">
+					<Button text="%preferences.contribute.sponsor" minWidth="100" onAction="#showSponsors">
 						<graphic>
 							<FontAwesome5IconView glyph="SPONSORS"/>
 						</graphic>

src/main/resources/i18n/strings.properties

@@ -338,12 +338,12 @@ preferences.contribute.getCertificate=Don't have one already? Learn how you can
 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
+preferences.contribute.sponsor=Sponsor
 
 ### Remove License Key Dialog
 removeCert.title=Remove Cert
 removeCert.message=Remove supporter certificate?
-removeCert.description=Are you sure you want to remove the certificate?
+removeCert.description=Even without a supporter certificate Cryptomator stays functional and neither restrict access to your vaults nor lowers its security.
 removeCert.confirmBtn=Remove Cert
 #<-- Add entries for donations and code/translation/documentation contribution -->