same behaviour here.
mylearn account associated with private E-Mail address but forwarded to Partner connect.
Login or password reset not working.
I Used to have an salesforce account associated with my company E-Mail address.
But am not able to log in with my former salesforce credentials nor ca reset my password.
My issue is different as I urgently need to reschedule an Exam.
Certification case is still unresolved, E-Mail to partnercentral not even answered.
Will keep you informed once I see any progress.