Thansk to your reply and looking at the log file,
I created a pass.txt file with 2 lines (usename and password)
and modified these lines in the .ovpn file to reflect path:
ca ca.crt to ca #PATH/ca.crt
cert client.crt to cert #PATH/client.crt
key client.key to cert #PATH/client.crt
And apparentlty it is now working.