The dreaded PEC-SUB-0002 on Prolific

I know there has been a couple posts about this error code. I know because I read through them all! The problem is, I’ve done every single one of the recommended steps and nothing is working. The hotspot trick occasionally works, but I’m starting to get that error code on my hotspot as well. This is incredibly frustrating.

Besides the recommendations on the article, has anyone found a trick?