GP Premium Update Fails

I have GP Premium and Generate Blocks as plugins. I previously deleted Generate Blocks Pro because my subscription is not active.

Under Appearance < Generate Press it says “Receiving premium updates.” From what I understand, I’m supposed to receive updates indefinitely, but the GP Premium plugin is not updating. When I try to update GP Premium, I receive a message stating “Download failed. Unauthorized.”

I’d like to know why I can’t update GP Premium.

Thanks