NEED URGENT HELP FOR MY FORUM

Hey, I kinda need some help my forum www.habboslice.co.uk aka www.hotelforum.itsmyland.com.

All the files are uploaded to my hosting [www.hotelforum.itsmyland.com.]

Then I changed in server settings my site url from www.hotelforum.itsmyland.com to www.habboslice.co.uk then the forum just logged me out andI cannot gain acess to it on any admin account or a test acount I made.

The forum is on maintenance mode at the moment, any ideas how to get it running or do I have to re install it again ?

backup and reinstall

All I can suggest maybe is re-adding the install.php and run it over.

WOuld somebody be able o sortit out if I gave them the ftp details ect.

i could....