I have been desperately trying to help a website client with an old WP website which was manually installed at GoDaddy. After 3 hours on the phone with GoDaddy (during which the php version was upgraded and the database was upgraded) I am now unable to log into WP. Each time I put in the username and password I am flipped back to the login page. Please note that if I put in an incorrect password I get the usual error message so I know that's not the problem. GoDaddy have now said that they can't help me and I need to talk to WordPress. I am at a loss!
Does anyone have any ideas how I can help my client fix this?