OpenVPN and DD-WRT router as Client

Setup my own OpenVPN server on Linux Ubuntu and have a bunch of Android and Windows clients that work great via an OVPN file I generate. I am trying to get it working on a Linksys router I installed DD-WRT on it. I can connect but cannot get any data working. Ping fails. Disable VPN and works fine. Can someone please tell me what I am doing wrong? Thank you

The OVPN file that works:

client
dev tun
proto udp
remote [IP ADDRESS] 1194
resolv-retry infinite
nobind
persist-key
persist-tun
remote-cert-tls server
auth SHA512
cipher AES-256-CBC
ignore-unknown-option block-outside-dns
verb 3
<ca>
-----BEGIN CERTIFICATE-----
[ca redacted]
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
[cert redacted]
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----
[key redacted]
-----END PRIVATE KEY-----
</key>
<tls-crypt>
-----BEGIN OpenVPN Static key V1-----
[tls redacted]
-----END OpenVPN Static key V1-----
</tls-crypt>


Thank you