No internet access when "Send All Traffic" VPN Checked

Hi Ladies and Gents

Wonder if you can help me. These past few days I have been setting up a VPN on my DD-WRT enabled router. I have successfully accomplished such task, however when I'm connected to the VPN on my phone my public IP address does not change, after doing some reading I believe that is because "Send All Traffic" is unchecked in the VPN profile, but when I check "Send All Traffic" I get no internet access what so ever.

Any advice/input/solution to this would be greatly appreciated.

Cheers

Cameron