Looking for logging into the Sims 3 No In Firefox site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Sims 3 No In Firefox site. After that you can login as usual with your login credentials.
https://answers.ea.com/t5/The-Sims-3/blank-form-to-login-to-sims-3-exchange/td-p/1999829
https://answers.ea.com/t5/The-Sims-3/I-can-t-log-in-to-The-Sims-3/td-p/1789895
https://forums.thesims.com/en_US/discussion/929070/launcher-login-issues
https://www.mozilla.org/de/firefox/
https://support.mozilla.org/questions/1172623
https://support.mozilla.org/questions/1178168
https://support.mozilla.org/en-US/kb/fix-login-issues-on-websites-require-passwords
https://de.thesims3.com/gettingstarted/browserupgrade
https://www.youtube.com/watch?v=9-yN-YSQ0qg
https://steamcommunity.com/app/47890/discussions/0/1488866180600282088/
https://send.firefox.com/
https://books.google.de/books?id=CtCLAwAAQBAJ&pg=PT153&lpg=PT153&dq=sims+3+no+login+in+firefox
https://kb.iu.edu/d/ahic