In case you have a Creator account that is not connected to Facebook, you may have difficulty registering on Roundabout.
To connect your Instagram Creator account to Facebook just go to:
"Create" or "Connect" page
Follow the next steps
If you have already logged in to Roundabout which has not been successful, we recommend resetting the Facebook - Roundabout link by following this procedure:
Disable the Roundabout app from Facebook: https://www.facebook.com/help/405094243235242
Try logging in again by completing profile creation