Problems with refueling Opel GT

Hi guys, when I refuel, it doesn’t start right afterwards (it lasts about 30 s until it starts properly). Problem only occurs directly after refueling. After that everyone is like that, so if nothing had been. Motor lamp still glows. The following I have already done: 1. Error read out -> lt. code is the Kraffstoff pressure sensor broken 2. Am to Opel -> told me the same and a new sensor installed 3. Problem was not fixed 4. So again to Opel -they said m 5. Problem again not eliminated 6. again to Opel – this time they told me may be due to the software, but they have to ask directly at Opel one gets in touch with me. That’s the current state. Am really desperate. Someone an idea? What else can that be? MfG