Cool seems to have worked for most, I'm sorry I had to just dump and run, but I had to take care of kid.
But as Firekodi wrote a simpler fix is just to change row 715 to referer="unknown". The problem is that the regexp couldn't find what is was looking for, I think that is because rtl had changed something with the link.tvnow.de but I'm not sure.
@LuckyLuciano123 I think this fix should work for you too, you just need to find where the addon is located, I don't have a Fire-stick so can't tell you exactly where it is.
*again I'm sorry that I write in English here but I think that's better understood then if I wrote in German.