Ok, well, someone may want to look at the code. The requirement is 100 games... This may be the same issue as to why my PFS 4th star did not show up...
Starfinder Role Playing Guild Guide wrote:
GM NOVA REWARDS
The Starfinder Society Roleplaying Guild offers a GM ranking
system. This system uses novas to denote the activity and
experience of a given GM. The novas are visible on your Starfinder
Society ID card. You can earn up to four novas for running a certain
number of reported games, as follows.
• Report 10 sessions as GM = 1 nova
• Report 30 sessions as GM = 2 novas
• Report 60 sessions as GM = 3 novas
• Report 100 sessions as GM = 4 novas