I have connected an account num xxxx on my account for obtaining results of the EA installed. It's not my account, it's the account of my friends while he become a seller. So he can't connect this account with his account mql5 because he has already connected on my account. I have deleted the signal of my account but the issue stays. Have you a solution ?
Make a new one, which means to start over obtaining results,
Or use your account as the provider account.
Realize that you can not swap signals and accounts between you and your friends, without consequences, as this forms security issues.
Technically, it's your account and your signal.
An account that it was used to subscribe to a signal in the past, cannot be used to publish a new signal yourself.