I'm so sorry for my English taken out of the translator.
Trying to access the launcher, it asked me to update, when updating the application the application gave me problems, after looking for various solutions on the internet to be able to access the game (uninstall the game and reinstall, install it from the Microsoft Store, enter from the microsoft account, that the microsoft account in the Microsoft Store gives problems downloading the launcher, adding the gmail account to the Microsoft Store since my minecraft account was originally bought with gmail and downloading the launcher from this account) in the end we were able to boot the application without errors.
The surprise is that now neither my default Skin appears nor does it recognize me as having already purchased the game, it leads me to play the Demo or buy the game.
I need a solution to this, I don't know who to contact.
So it's not a solution, likewise, since it gave me the error, it appears to me that I haven't bought the game and I've bought it for quite some time, which is why I need a solution to this problem that has given me the launcher update.