Why do I have to buy Minecraft again?

Namely me, when I switched to a Microsoft account in Minecraft, it said on the right that I have to buy Minecraft again. But why? I don't mean on a website that you have to buy Minecraft again if you switched to a Microsoft account. Below this text is the message that was displayed to me. Can you tell me the mistake?

You probably only have the "Windows 10 Edition" and not the Java version.

No, I have the Java Edition.

Yeah obviously not?!

Same happened to me. I HAVE JAVA

same happens here dont know the cause

What is the answer to this question? I also have purchased the game and it is telling me that I need to unlock the full game. The only tip I have been able to find is to restore my license. I tried this and it solved nothing.

same and i have java