Spent the last three hours trying to give Microsoft money. However, the 'Microsoft Partner Network', 'Partner Membership Center', and 'Partner Center' all ganged up on me to make such attempts futile.
It is a masterclass in how NOT to handle authentication, management of organisations, user identity etc. You can pick up years of experience in just one morning *. Recommended...
(* For bonus points, you can also attempt to get support)