Is there anything I can do to change that? I just want to enjoy the Enhanced Online version of GTA 5, but it states that my account is not eligible for migration at this time. No specific reason, just that error message.

Rockstar Support is basically non-existent, as they just qoute old help-threads for errors and then close the ticket.

Im Level 152ish, multiple Cars, Weapons, Clothes, Businesses etc - the whole shabang. So it can't insufficient progress or something