OpenVPN Client timing out
So, what you are missing in your conf is - Routing.
The entry like this:
;push "route 192.168.10.0 255.255.255.0"
is commented into your config file. That explains why you are getting the IP but not able to ping, as there is no route information in your config file.
Uncomment this line and replace the IP information with the IP of your gateway where you are running the openvpn server.
Once you do that, your problem should be fixed.