My Minecraft Java Version is a Demo WHY I bought it

Good morning . I have the following problem. I set up my PC again and at the same time. My Mojang account linked to Microsoft. I have to anyway. I reinstalled everything and logged into the launcher via Microsoft. Now, unfortunately, the Java version is shown to me as a demo all the time. Unfortunately I don't know what to do next and ask for a solution. Just for fun I got a new key for Mc Java and tried to enter it on my account. Report you already own the game