That guy donks, then that guy donks, then the first guy donks again

[Guy McSucker]

I am going to wish I had a working converter for this.

Crypto $5/10. KK on the button.

UTG (40/10, mysteriously open raises and then check-folds a huge amount) opens.

MP (30/20 decentish) cold calls.

CO (30/20 terrible) calls.

I threebet on the button and it's four way to the flop.

Flop is 446r.

UTG checks, MP donks, CO calls, I raise, UTG folds and the other two call.

Turn is 8 putting a two-flush out.

MP checks, CO now donks, I raise and they call.

River T not completing flush.

MP donks, CO calls.

1) WTF is going on?
2) How was my flop and turn play?
3) Just call now, right? Folding at 17-1 or whatever it is seems foolish.

Guy.