@MojangSupport
I purchased the PC version on February 25, 2018.
If you want to play after a long time, you can only play the demo version.
why?
When only the demo mode is accessible or it's asking you to pay again, this means that you're logging in with an account that doesn't contain a Minecraft profile/username or a copy of the game. please visit https://help.minecraft.net/hc/en-us/articles/360029643892-Can-only-play-Minecraft-demo-Java-Edition- … for possible solutions. Thanks! ^AS