Yes, I am in the same situation.
There is no issue with config file and certificates from the server; importing them into a OpenvpnConnect client, the client PC connects without any problem. But importing the certificates in Opnsense and configuring it as a client produces the same error.
There is no issue with config file and certificates from the server; importing them into a OpenvpnConnect client, the client PC connects without any problem. But importing the certificates in Opnsense and configuring it as a client produces the same error.