Dobble Account after Update

Greetings Community, i haf a problem and maybe some one has a good solution. After Updates i get a new account, but my old one stays. Dat means after every update i have a new account. Now it seems that i hav two Nextclouds on my Laptop but only the newes works, the old one is only local, it not sincronise the files. Maybe someone has a solution for this ishue. Give Thanks

Some one an idea? greetings