Av Bypass Question

I created a meterpreter reversetcp payload from metasploit that it can bypass the scan of antivirus (bitdefender) but when i am trying to run it the antivirus says suspicius activity and block it.

The payload is in an executable app (sumatra.exe) and i also have tried the port 443 and reverse https all undetectable on scan but not on execution.

Any suggestions ??