QueenMaa, a number of Webtop features have been recently moved across to the core uID build. To change your personal account details and security details you can access them via the primary uID login feature. More information can be found here: http://forum.ucoz.com/forum/3-20579-1.
I have forwarded this bug onwards either way. It appears users are being redirected to the RU uApi request page instead of the English. You can change the language in the top right corner of the page.
Is there any specific information you are seeking which you cannot access via the core uID build?