I could give you several examples about stock going flat after approval lol .... in any case question is: how could you hold a stock you are not comfortable to hold? That’s sounds crazy to me.
It went at 3,81 the day of approval from your 2,7 entry point and it was a good gain.
In any case, the only reason this is down is IMO that they still haven’t signed a licensing deal in US. You have an approved drug but no revenues.