If you mean
game-protect, he isn't banned.
Modlog shows data for the past 7 days, and he has over 100 deleted posts. So he may have received a tempban, but they aren't shown in public.
I counted and saw 112 posts (of GP) deleted. The number of total deleted posts is 1345. 8.3% of total deleted posts belong to GP at December 04, 2019, 01:53:54 AM (forum time).
. di 112/1345*100
8.3271375
User game-protect is currently banned. Temporarily or not can say only global moderators.
With tem bans, users are still able to wear signature. It's clear that GP don't have permanent ban, but if he got temp banned, it will be his second time.