It's hand from video so I'll write the action.
CO Open raise 2.5x, BB(hero) call with 22.
Flop comes down:
2h5cQc
CO bets ~2/3, hero raises(somewhat 3x)
Turn comes Kd (2h5cQcKd)
CO checks, Hero bets ~3/4, CO calls
River comes 9c (2h5cQcKd9c)
Hero check. (Pot size bet left on a river)

•What we should do on a river and how we balance our range here?
•Its seems best for our hand to check fold, but then we have to check our flushes too? Sets check folds, flushes check calls or check shoves. But the problem is that we never get value from his bluff catchers with our flushes
•It seems hard to image what bluffs we could have to get otr(to balance with our flushes), maybe Ac3x,Ac4x, but if we raise some of our flushes and these Aces we should have way too much bluffs? And it seems way to loose on flop to raise Ac3x,Ac4x, and bet turn
•so if we somehow find few bluffs on a river, how we protect our checking range (check some of our flushes on river?)
•Maybe we should mix calling and foldint our set with 2c?