Hello,
This mostly happens when blocked by firewalls, we recommend whitelisting the following IPs:
34.73.16.145
34.74.87.96
35.231.75.105
35.231.112.253
35.190.132.173
35.190.159.193
35.237.55.60
34.107.184.112
Thank you for understanding, you are right the first version had problems with some old PHP versions, now fixed! 🙂
