Update: apparently this is a known issue on Samsung Android devices; OpenVPN VPN apps need to request Device Administrator permissions (the 2 main ones on the Play Store don't.) For reference, see:
Here's what we need to do:
- Request here that the Device Administrator feature be added to OpenVPN for Android.
- File a support ticket with OpenVPN requesting the Device Administrator feature. Rate the priority Critical and reference Ticket ID #OVP-438-18981 when you do so.
Kindly insist Samsung enable OpenVPN apps to run on their devices without having to request Device Administrator permissions.