wordpress and site url

Hello

I think i made a mistake by changing the worpress url?

I changed my www.remarpro.com url to https://leannekimberley and my site url to https://loveleannekimberley.com

I can no longer access my www.remarpro.com dashboard to edit. It just comes up as ‘page not found’. Should I have not changed the wordpress url at all (only changed to site url). How can I change it back if I can’t get back into it?

Thanks very much, Leanne