Unable to save any changes

Hi
I have just installed your plugin on my brand new site that I need to build – and I cannot save any changes or make it work, as I am getting an error message on every attempt

Error: Options page ucp_options not found in the allowed options list.

can’t select a FREE design, can’t save the ON mode, can’t save any content changes.
Could you please advise ASAP how to fix it.

I am using your plugin on my other live website – and it is working without any issues.

If I can’t make it work here (free version) ASAP I need to get another plugin.

The page I need help with: [log in to see the link]