If you are unable to RSVP to Community events, and instead you are being redirected to the SessionLab app, please follow these steps in order to successfully RSVP:
Go to “Login” at the top right-hand of the community page
On the next page choose “continue with SessionLab”
You should be taken to the community homepage
From here, access the event page and RSVP from there.
Here is a short video with the above steps:
If you are having any issues RSVPing to events after this, please don't hesitate to reach out to support@sessionlab.com.