Hi, since 2019 I have Minecraft Original, which works both online and offline. I recently migrated to the Microsoft account as you asked; however, since the migration I haven't played offline because I have internet at home and I'm almost not without it. However, this morning I went to try to play my game and I couldn't because I kept getting the error message when accessing the account and saying that I could only play the demo.
 
In the "Minecraft Launcher Error" image on the right side of the screen the Launcher asks me to buy the game and in the lower left corner it says that there was an error accessing my account - today after heavy rain in my city and power failure I went offline several times... I would like to know if this is a problem with the Launcher or if I can no longer play Minecraft Offline or if something is missing from my account, however, I say again that when I bought the game it was built in to be able to play offline.
 
I ask this because at my mother's house the internet wavers a little and sometimes I go offline. Also the game sends me to the following page that no longer exists: https://help.minecraft.net/hc/en-us/articles/360029643892-Can-only-play-Minecraft-demo-Java-Edition-?ref =launcher
 
Furthermore I'm sending the launcher print after returning to the internet. I hope you can help me and if it's not here to solve these problems, I ask you to direct me to the right place. Thank you in advance for your attention.