I'm using the AX50 with a Google Fiber box. GF box serves as DHCP (wifi turned off), AX50 serves as Wifi (DHCP turned off). I had a TP-Link AC1900 and it worked great with this setup. Just upgraded to AX50 and everything is working, except for Parental Controls (main reason I upgraded). When I click these options, I get the error "Oops... The device is offline. Please check WAN and network configuration to make sure the appropriate settings are entered correctly."

I've spent an hour on chat w/ a TP-Link rep, who eventually told me to turn on Bridge Mode on the Google Fiber box. The GF box doesn't have Bridge mode, as it's just Google Fiber, not Google Wifi. Spent another 20 minutes on phone w/ Google confirming this. 

Anyone have any thoughts on how to get this feature working in this scenario?