I'm doing it now actually.

I think prpnet from PRimeGrid is completely separate from there BOINC part, though they do offer a badge in the PSA (Project Staging Area) which is run outside of BOINC, I don't think prpnet is part of that. You'll likely get close to a badge with just one SoB wu I think. IIRC they give ~9000 credits each, maybe more now that the exponent is higher, so hang in there with the one you are running. Yes, only two of their subprojects are cuda, they've had more in the past like the AP26 subproject but it was basically completed.

You only show up in a BOINC xml export when you've got any sort of credit at all. What is your primegrid ID ? Perhaps run the ppsieve project on your cuda card, it's still pretty good credit and the wu's are only 10mins or so. They export stats 4 times per day so it wouldn't take long to show up..

Let me fix your older id's now and I'll let you know.