I have a different router running DD-WRT and hosting an OpenVPN server. I am able to connect to it from a laptop using OpenVPN Connect. When I apply the same OpenVPN client config (.ovpn file) to my TP-Link router, it stalls on "Connecting". I cannot find any logs from the TP-Link to assist in debugging, and the server shows no record of it attempting to connect. The TP-Link router definitely has internet access because I can connect to it and browse the web (it is running on my phone's hotspot, and will ultimately be my travel router).

My OpenVPN server is running OpenVPN version 2.6.10. I found this TP-Link FAQ but it seems to be too old to work with this server version: https://www.tp-link.com/us/support/faq/3317/

What version of OpenVPN does TP-Link use?

Do you have an example OpenVPN config file that I could copy?

The client has no username or password and the client connection (.ovpn file) looks like this:

client
dev tun
proto udp
remote REDACTED 1194
nobind
persist-key
persist-tun
resolv-retry infinite
remote-cert-tls server
auth-nocache
verb 4
float
tun-mtu 1500
auth SHA256
comp-lzo adaptive
data-ciphers aes-128-cbc
<ca>
-----BEGIN CERTIFICATE-----
REDACTED
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
REDACTED
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN PRIVATE KEY-----
REDACTED
-----END PRIVATE KEY-----
</key>