“Couldn't create this review app • Your role __ on the team __ is not allowed to perform that action.”

Resolution

Review apps are always created on behalf of the Heroku account that initially connected the parent app to Github. To resolve this, make sure that the user who set up Github sync is listed as an admin on the team so they have sufficient permissions to create review apps.

If you dont want to change the role of that particular account, then you can disconnect the app from Github and reconnect it with an team admin account.