If the maker and seller are not answering, that's always a bad sign.
I am on the fence on this model. Why?
https://www.tomsguide.com/us/gryphon-secure-mesh-router,review-6042.html shows good performance and maybe that ease of use but FAILS in a big way for me since if the company folds or decides it's not worth the trouble then they shut down the services and your routers are nice bookends.
As to tracking, your ISP and government likely do this already. A good example is what happened to Lavabit. Most of the story is at https://en.wikipedia.org/wiki/Lavabit but of keen interest is how our government installs hardware taps at the ISPs.
So you have to think about VPNs which are good and bad out there as they can collect data as well.
What I want: Wifi router that has user-friendly parental controls.
1. Need one that can connect to the ethernet port of my Centurylink C3000A modem, as its connection to the internet, since the Centurylink modem is pretty useless as a parent router, but that's what I've got to work with.
2. The two desired functions are service interruption/bedtime mode, and browsing history
3. Also user-friendly and quick admin interface
4. Decent speed
5. Decent coverage of a small three story house
6. Ability to separately manage individual devices
7. Ability to quickly log in as admin and toggle internet suspension on/off for individual devices
8. Access granular browsing history, sorted by device connected
9. Be able to bypass entirely with parent's devices
Would also be nice to:
10. Manage from an Iphone
11. Manage from anywhere, not just while on the network
12. Allow more than one admin
13. Cannot be defeated by stealth browsing mode
Prefer not to
14. Pay monthly fees and pricey up-sells
15. Have this turn into yet one more device that tracks everything my family does and reports it to a database
Don't really need
16. Content filtering
17. Specific site blocking
I came across the Gryphon that checks a lot of boxes, esp. #7. But I am not sure about #1. Also worried about #4 & #5.
#15 is probably a lost cause no matter what I get.