Works by fixing server.conf
After a fresh install, when you generate the client profile, you normally get timeouts. For this to fix, add the following lines in your server.conf file which is located as /etc/openvpn/server.conf,
The lines are,
cipher AES-256-CBC
auth SHA256
After adding these lines, restart the openvpn servive by using,
systemctl restart openvpn
Also, reboot the instance for any unknown changes to be applied.