I get the invalid hand message when trying to post via 'Add a hand history', so I'll just do it like this.

Hand History for Game 1111111111 (Pacific)
$20.00 USD NL Texas Hold'em - Friday, March 29, 05:14:15 ET 2019
Table Veracruz (Real Money)
Seat 6 is the button
Seat 1: Player1 ( $24.68 USD ) - VPIP: 17, PFR: 17, 3B: 0, AF: 0,0, Hands: 6
Seat 2: Player2 ( $21.50 USD ) - VPIP: 23, PFR: 19, 3B: 9, AF: 1,0, Hands: 431
Seat 4: Player4 ( $21.93 USD ) - VPIP: 31, PFR: 18, 3B: 2, AF: 8,0, Hands: 121
Seat 6: Player6 ( $20.46 USD ) - VPIP: 27, PFR: 19, 3B: 7, AF: 2,4, Hands: 1325
Seat 7: Hero ( $20.00 USD ) - VPIP: 24, PFR: 18, 3B: 7, AF: 2,3, Hands: 39604
Seat 9: Player9 ( $20.00 USD ) - VPIP: 16, PFR: 13, 3B: 14, AF: 0,0, Hands: 61
Hero posts small blind [$0.10 USD].
Player9 posts big blind [$0.20 USD].
* Dealing down cards *
Dealt to Hero [ Kd Qd ]
Player1 folds
Player2 folds
Player4 folds
Player6 raises [$0.44 USD]
Hero raises [$1.70 USD]
Player9 folds
Player6 calls [$1.36 USD]
* Dealing Flop * [ 5h, 3c, Kh ]
Hero bets [$1.90 USD]
Player6 raises [$5.70 USD]
Hero ???

He opens 43% and calls 3bet 50% in general and on BTN. Not sure what to do here. Should we call to keep his bluffs in his range? Or just shove?