Issues migrating account to other devices – Message+ Review

I have been attempting to scan the QR code to migrate my account to a phone I use at the gym. Says unknown error. Have tried installing uninstalling, with no success. Have tried more times then I want to admit or think about. I also sent an email to customer service about but received no response. It would be nice to resolve this.
Review by dizzywillow451 on Message+.