Problems Getting Back Into The Forum Since Upgrading To X7?

I couldn't log into the forum after upgrading from X5 to X7. It wouldn't recognise my log in details but when I tried to open a new account it told me my username and email was already in use. I have had to open a new account with different email and user name. I was PINKGEM before. I hope I can find my past discussions as I often refer back to them for help if I have forgotten how to do something. Has anyone else had problems getting into the forum after an upgrade