How often do plugins get checked and released here on uMod?

That's a vague question.  Are you trying to confirm the validity of UMod?  Because I've been using them for 6 years.  In fact, on their discord, they will fix a plugin in minutes on wipe day, making it so easy.

I know I've talked to some owners that beieve only plugs you purchase will be updated when needed, but I can assure you, UMod has devs that look after the vast majority of these plugins even if the original dev(s) are not longer available.

New plugin reviews are mostly on hold while we build a new website :)