I have Minecraft Java but it's not being recognized.

I purchased "Minecraft: Java & Bedrock Edition for PC" in 2022, and since then I've played the Java version several times. However, today when I logged into the launcher, it gave me an error logging into the Java version. When I go to minecraft.net, it doesn't recognize that I have the Java version; it shows the option to buy this version, but when I try to buy it again, it says I already have the Java version. Then, when I go back to the launcher, it still doesn't recognize that I have this version, and it also says that my username is being used, but the account it's being used with is mine.