Yes. Everything worked perfectly during the 30-day free trial. The problem started after I paid my first monthly fee for a 10-person Realms subscription...nothing else changed.
I also reported this as a Realms bug. The issue number is "REALMS - 428."
I am not sure if it is a Realms bug, a MCPE bug, or maybe one or more bugs in each domain.
It looks like you "unmarked" unreleased versions. However, I think this could actually affect unreleased versions if you do not figure out what is going on...
I just reported on the "REALMS-428" bug report the following comment:
"Interesting news: my children and I were able to use the Blue Leopard realm suddenly this evening (United States time zone). This is weird because I have no active subscription (at least as far as I know, it was cancelled by Apple)."
So, apparently we are now able to use the Realm without an active subscription. Do you want us to continue doing so for testing purposes? Please let me know before you cut off access so I can give my children a fair warning...they like to play with each other in there sometimes without me.