Roku’s and vpn. One works and one doesn’t?

I have two rokus one is an old one that uses Ethernet the other is a new one with Wi-Fi. I have them both going through a vpn through the firewalla. The old one with Ethernet plays content fine. The new one with Wi-Fi won’t play. I am using the same vpn client for both of them in the firewalla settings. Does anyone know a reason why one is working and the other isn’t?