@MojangSupport This is marked as resolved on the bug tracker when it's very much still an issue. Players are having errors in Minecraft Realms where they get kicked instantly. For instance, here's my friend (the owner of the Realm itself) being booted from the world on entry.

As a first step, please check our FAQs for connection troubleshooting-- msft.it/6018w64J0 for Java, or msft.it/6014w64JA for Bedrock. ^NS