I temporarily gave client access, website and database ownership to an assistant (app provider). Thanks to his work on database through PHPMyadmin, my web browser could finaly points correctly to the app login page : www.subdomain.mysite.login Then I reverted all changes to recover the website and database ownership, but afterwards the web browser is now pointing to such an "ERROR 404 - NOT FOUND!" page. So I think that I probably done something the wrong way, and I NEED HELP and explanations to better understand how to change a website and a database ownership without loosing access to the website. Awaiting for help and guidance ASAP ! KS
check server log / website log... it's really hard to guess what was done... also I don't think the login page has a .login tld
More info on exactly what you changed might help too, I'm not at all clear on what you did (and later tried to undo).