Minecraft Demo Bug

 
I know that I wrote something similar once, but please make it read in full.

Then I was wrong with the version, because in fact I have Java Edition for Winows 7, the launcher version is: 2.1.5964

Like every day, I wanted to play Minecraft. I turned it on, waited for it to update, and something that never happened happened - always, normally or after the update, I immediately started the launcher. Now, however, I had to log in. I didn't remember the password, so I changed it for a new one, logged in and had access only to the demo version. Already the second day I have access only to the demo version, and I would like to play on my worlds, so I have already written on various media about this problem, but there was no answer that could help. Someone directed me right here to write about this problem on this page.

I don't know how long I have to wait, but PLEASE solve this problem as soon as possible. This is the fifth day of waiting for access to a normal Minecraft game, I am slowly losing patience, and I still do not have access to a normal game.

I would like to receive information:

• why do I have this error?
• how much time it take to repair it.

Once again I repeat that THIS PROBLEM IS ON THE JAVA EDITION VERSION, NOT ON THE POCKET EDITION.

I paid 100 zlotys for this game and I do not want this money to be wasted.

Information from me:

• the error occurred with the new version of the Launcher, in which, I don't know why, but I had to log in (I can't undo this with the old password, because I can't remember it)
• an error occurred on Java Edition
• no other sources help me with this problem, this is the only chance to get my game back.

If I don't get any tips to recover the game, I'll have to do things I really don't want to do, like uninstalling Minecraft (the loss of all the worlds I've played for months).

I have enjoyed playing Minecraft for a long time and I do not want to end this adventure in this place on such a stupid mistake.

Once again, please fix this error. I really don't want to wait that long, because it's been 6 days waiting. I can't stand it for more than 1,5 weeks.