I found a typo in the german translation for the action to move a window one desktop to the right "Fenster einen Destkop nach rechts bewegen" it should say "Desktop" instead of "Dekstop" and also the Icon seems to be wrong compared to the one to move to the left:
Device information:
- Type of Mac: MacBook Pro 15" late 2013
- macOS version: 11.6.8
- BetterTouchTool version: 3.826