Weird log in bug

[Chloe_the_cow]

When I try and log in it brings up a error that says "500" instead

 

[Esoterix]

Creation of multiple accounts is likely the issue here.
The use of multiple accounts may cause a conflict in the web browser data. Only one account per user is supported.

 

[Stanthropical]

Try changing email first. Make sure to confirm the change via email.

Your previous / other profile will let you in.

https://world.siteground.com/kb/internal_server_error_500/

Not relevant.