The recent login and sign-up issues have been successfully resolved by @DoomJoshuaBoy. Fresh logins are now working normally, so feel free to log in without any trouble! if you do run into trouble please let us know!
You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
Then I would suggest avoiding Ikemen completely. Troubleshooting Ikemen Go software requires many details and explanations about errors related to coding. I hope you understand that the longer you enjoy Mugen instead of Ikemen, the better it is for you do bit less detail than Ikemen go in the future