Hi Nicholas,
I'm Evett an Independent Adviser, willing to assist you with your issue.
It might be caused by your Xbox account. Check if you can play the full version of Minecraft.
- Start the Xbox app https://www.microsoft.com/en-us/p/xbox/9wzdncrf...
Use your Microsoft Account (the same you used to purchase Minecraft) to sign-in to the Xbox application
- Find Minecraft and press the Play button to play Minecraft and check if it is still the trial version.
If the problem is not solved check How to uninstall and reinstall a game on Windows 10 and reinstall Minecraft https://support.xbox.com/en-US/games/game-setup...
Best regards,
Evett