Flint 2 not respecting VPN client policies

Hi I recently purchased a Flint2 flashed to the 4.5.8 firmware. After configuring the router to connect to ExpressVPN (which is successful) I change the VPN policy to be based on client device. I have a couple of PCs that I want to use the VPN client all the time.

However, some apps on my Apple TV 4K seem to think it’s part of the VPN even though its MAC address is not listed as must use the vpn. I tested this by disabling the VPN in the router and everything on my Apple TV works as expected. Turned back on the VPN and Hulu fails to connect. Is this a known issue? Any suggestions on how to troubleshoot this.
Thanks in advance.