I tried to search for a support email or chat to report a bug, but wasn't able to do so. So, in the meantime, I will do it through here.

I just started to use the multi-session package functionality (where it allows the user to select multiple sessions within the same flow), BUT I found that when the client has already scheduled a multi-session package, and then he (or even the admin) try to re-schedule one of the sessions, it shows an error that it needs to be ALL of the items updated, but the tidycal interface do not allow to show the rest of the sessions (and even do i think that's fine, but tidycal should allow you to change just one, and don't force to change all of the sessions)