@jagadeesh-s2104 a user had some success with argo tunnel as reported here - https://forum.cloudron.io/topic/5714/argo-tunnels . We haven't tried this ourselves.
@girish Thank you!! It worked with the version parameter!
@jagadeesh-s2104 Clean backup is a good idea. Thank you!
@jagadeesh-s2104 I have fixed the instructions. The u.activate is not needed anymore. BTW, it seems to update the email address already (despite the above error). Just run u.save! .