Please explain the problem in detail. What happens? What are the exact error message(s) ?

on the website you can see on top right a drawing of a figur to register (https://all.accor.com/deutschland/index.de.shtml). You have to click on it to open a new window (small one). This doesn´t work with Firefox (Microsoft Edge is okay). When the window is open, you can login. There is no error message.

I also try making a copy of the internet adress after login from Microsoft edge and insert the adress into Firefox. Then you have access to the account.

Hello FredMcD,

I found the problem, it is the addon uBlock. If you turn it off, the website of accor works correct.

Thanks for your help. best regards

That was very good work. Well Done. Please flag your last post as Solved Problem as this can help others with similar problems.