Peugeot 307 not gassing in petrol when cold

Hello everyone. I have a 2006 model 1.4 16v petrol/lpg Peugeot 307 brand vehicle. In the morning or when I don't start it for a long time, the vehicle does not eat gas when the engine is cold at first start. When I step on the gas, the rev needle is dying to go up. After 1-2 minutes of idling, there is no problem. It chokes on gas up to 2000rpm and eats gas after 2000rpm.

when using lpg

no problem. Gasoline pump changed, spark plugs changed, not fixed. Coil was checked. It is fixed when the vehicle is connected to the device and the butterfly and general adaptation is made. Between 1 and 3 months, the adaptation is broken. The master says that the adaptation has deteriorated due to LPG, he checks the LPG and says there is no problem. Why do you think the adaptation is broken, I am also curious about your comments. Thank you everyone in advance.