Turn is a call or a fold?

Coinpoker plo10
We just sat down
Turn is a call or a fold?
Preflop is a call right?

Hero (BB): 100 BB
CO: 325.6 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 4)
BTN: 100.1 BB (VPIP: 0.00, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 4)
SB: 184.4 BB (VPIP: 25.00, PFR: 25.00, 3Bet Preflop: 0.00, Hands: 5)

4 players post ante of 0.1 BB, SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.9 BB) Hero has T♥ 9♠ 9♥ Q♥

CO raises to 2 BB, fold, fold, Hero calls 1 BB

Flop: (4.9 BB, 2 players) 8♣ Q♦ 6♦
Hero checks, CO bets 4.7 BB, Hero calls 4.7 BB

Turn: (14.3 BB, 2 players) T♦
Hero checks, CO bets 13.6 BB
Hero??