Hello everyone

Now I am very new to Concrete 5. So there could be some rookie mistakes here. Sorry for that in advance.

My problem is, that at the moment an existing Concrete 5 platform doesn't "let" anyone sign in because of an invalid token error. There is to say that I updated it from 5.7.5.9 to 5.8.4.5. Also it runs on php 7.4 now and not on 5.6 anymore.

Another change I did, was setting url_rewriting to true (also the neccessary htaccess change). There were no other changes beside that. Now I updated the website just a few days ago and it was running fine (I had to log in 2-3 times and it always worked). I think it changed with the url_rewriting setting but I can't wrap my head around why it would. Also when I set it back it wouldn't work again.

Anyone having any idea why? Or did you maybe run into that problem yourself? Any hint into the right direction would be very much appreciated...