Typically, that is on every other site I've played, when a player times out, they are forced to fold. Otherwise a vindictive player can really extend the time to play.
I would guess that if they have to call, they would fold. But if "check" is still available, the action on a timeout should still be Fold.
(ocultar) ¿Partidas que duran menos de 2 horas? Crea una nueva, selecciona "Tiempo para toda la partida" y establece un tiempo de 0 días 1 hora sin bonificación por jugada y límite de 1 hora. (TeamBundy) (mostrar todos los consejos)