AirVPN connect

Hi

I bought a MIKROTIK RBD52G-5HacD2HnD-TC and I would like to connect to the AirVPN ( VPN ) service.
Would anyone help me set up this VPN? When I try it, it doesn’t connect me and I only see in the logs:
AirVPN: connecting …
AirVPN: disconnected
AirVPN: terminating … - peer disconnected
AirVPN: disconnected.

AirVPN supports connection via OpenVPN and this service is supported by mikrotik so I should be able to connect.

Thanks for help.