There doesn't seem to be a fitting option for it in the tickets.

i believe theyve stopped allowing people to be a series moderator as there is often no use for them. series mods also have the ability to add games to the site at will and i believe people have abused that power to add unrelated games.

only series mods nowadays are on big community games like roblox and scratch so that the actual site mods dont have to deal with 90million game submissions of the same type

They started to add series moderators for new series requests now, but the majority of the series moderators don’t have enough power to create new games. But I’m pretty sure they aren’t letting people become mods for series with no mods still.