Snapshot Pro GATEWAY TIMEOUT

Hi, i'm on last wp version with all plugin online and i notice that snapshoot doesn't work. i try with local and google drive destination but the results are same:
" The gateway did not receive a timely response from the upstream server"
On console:
"GATEWAY TIMEOUT
The gateway did not receive a timely response from the upstream server or application."

I'm on shared server, i think is a problem of php parameter so what the minimal requirement to get snapshot works properly?