I don t know but i can not open room. It say i must change in my chanel manager. But went i try it say page not found

I don't know why but on my page there is an error or incompatibility..

I try to open rooms, but it tells me that I have to change something in my chanel manager.

When I go to my account, to look for the error. Whenever I press a button, page not found appears.

I try to open the calendar and it is blocked saying "wait a moment while the page is prepared" But it does not change