Invalid form token, cant login with default login page
stuck after doing an update from 126.96.36.199 to 188.8.131.52.. the upgrade was done incrementally to 5.7.3 and 5.7.4 and seemed to go fine. but somehow the market place integration appeared to be broken. So I deleted the project from concrete5.org and also changed the theme from fundamental [add on] to the default elemental. Subsequently, I appear to have broken the ability to log in completely.
I have had a database backup, that I restored that doesnt seem to help.
Any tips on how to proceed appreciated!