Logging in problems

I can’t log in anymore, and if it worked with tricks now, I can’t see when I’m sending. If I click Sign up in a thread, Firefox will use the data, but instead of my username, log in and register at the top right. If I then click on Log in, the “We’re just under MOTOR-TALK and screw” page will appear. I see, however, that other posts can write because my mail mailbox fills up with emails from you. Just when I’m the sc hreibe, has a new mail arrived. Yesterday evening everything worked and this morning no more. I already ran the PC and started nine and the browsers cleaned up, but it doesn’t work. The whole thing happens under Windows 11 Pro and Firefox both current versions. With Edge or Opera it looks the same. Can you please check where it hangs?