Update your game to play realms - but PE app is updated

I set up a realm for my students to join on their iPads we are using the pocket edition.  We paid for the app on all of their school iPads so they could socialize on Minecraft during the school closures because of COVID-19. None of them are able to join my realm.

Let me know if you need the link to the realm... 

I have no idea if it is the bedrock version...