I'm getting frustrated now.  The Deco M9 doesn't have a setting in the app to set the time or timezone.  So your time rules are off by 8 hours in my case like everyone lives in England.  If you are going to have time-based rules don't you think it's pretty basic to be able to set the timezone correctly?

Ok, so the only way to set them is in the web interface - which refuses to connect according to Firefox.  I've never seen a router that has a broken or disabled web management interface.  There might be settings to secure it but I don't recall setting anything to do that and the help page doesn't mention any. 

I've tried:

I'm on the wifi network with an IP that is in the same subnet as the internal router LAN IP.  I use HTTP and it redirects me to HTTPS and then errors out.

I plugged in an ethernet cable which put me on the same subnet and same problem. 

This is a really basic problem.  This should not be happening.