Realms "connecting to the realm"

hello
firstable sorry about my bad english

I wana join other players realm. but it says "connecting to the realm" and Im waiting for an hour.

I can connect other persons world by "multi play"
I use latest release (1.16.3). I restart or reboot my PC, launcher, game, my router.
I delayed and download Minecraft. I have tried to use VPN.

What can i do? or what is problem?