PrimeGrid is not showing in signature. And though I've checked the box, the entire signature is refusing to display here. The box unchecks when I post. Link entered to display.

It's not a bug - it's a feature!
That's because Primegrid is on another 'crystalsys' user. So a split account / split CPID (cross-project identifier). You find the other account by searching for 'crystalsys'
It's a consequence of the distributed nature of boinc projects that don't directly communicate with eachother to agree on a single CPID. Any new project you join assigns you a fresh CPID. Syncing happens eventually through running projects on the same client. Once that happens, Boincstats will pick it up as well and merge the stats under a single user.

So you can fix it by running most or all of your active projects together with Primegrid on a single client - it should sync after a couple of days.

the 'other' crystalsys's signature:



Detailed stats link: https://www.boincstats.com/stats/-1/user/detail/206514752947/projectList