Launching Minecraft with the old version

It hasn't been 1 week since I bought Minecraft.

Friends, we play together. There is no problem. The version of the game was 1.16.4.
I didn't encounter any problems when I played the game in the morning yesterday, but when I entered the game in the evening, I started it with a different version.
When I asked my friends, I realized that there was no problem with them. it starts me up with version 1.16.200.53. And it says Beta, I can't do anything in this version.
I can only play my own world alone. I cannot join any server. And I don't see my friends invitations.

When I deleted the game and uploaded it, there was no change. And since I installed it on my other computer, there was no change.
From what I looked at today, I see that this problem still persists.
But there is no problem logged in on the amdroid versions. I'm just having this problem on the computer.

I contacted Microsoft. But the changes we made with them could not be devoted to anything. He said there would be a problem with the servers. He told me I should contact Mojang.