Problems with the ID restore

Hello, App team. I had problems with locks in the app's main menu. Before giving this problem, I was able to save my ID and password. I uninstalled the app and went to install it again. He asked ID and password and put them in, but as soon as he returned to my account he continued with the lock on the main menu. I uninstalled the process one more time and in the second that I went to put my initial ID (not being of that second installation, since it does not leave the main menu) is said as ID already used. What to do, team? Thanks in advance. My ID 6C3K2HCH97C7.