Same problem here and i can`t figure out how to solve it, started a thread in iOS section but still no response and i also submitted a ticket to support but no response there either..i find it very strange that so many users have reported the same problem but still there is no update from OpenVPN.
https://forums.openvpn.net/topic13335.html
If anyone could write a step by step guide on how to solve the issue i would be much thankful.