not working vpn from regions

[labware]

We have an AlliedTelesys router with OpenVPM on board and clients with Windows10. We configured the connection according to the instructions, on clients version 2.4.7 with Win 10 OS from Moscow, it plows, and from the regions it connects, addresses are assigned, and there is no ping even to the gateway. We use the same login and certificate there and there for verification. What could be the problem? Tried it already from different PCs from different regions.

[novaflash]

Probably that router has an old and very limited openvpn binary built-in which makes it impossible to connect normally. A log file from that device would be helpful.