Guitar Pro 5 and 6 have different ID formats. For Guitar Pro 6, look for the prefix 6INT (for international licenses). Using an ID for a different version will result in an immediate "not recognized" error.
While the "best" Guitar Pro 6 user ID and key ID is a valid one linked to your personal account, the reality is that GP6 is becoming obsolete. To avoid security risks and technical glitches, the most effective path forward is to to move to Guitar Pro 8. You’ll spend less time troubleshooting activation errors and more time actually practicing your guitar. guitar pro 6 user id and key id best
Officially, Arobas Music has moved its support and development to Guitar Pro 8 . Guitar Pro 5 and 6 have different ID formats