I have a Nighthawk AC1900 WiFi I purchased from Sabai November 2018. I have the Sabai OS installed. The OS and router perform flawlessly with one exception. I cannot blacklist any web sites. It will not "save" any sites entered. As I understand it, Sabai’s OS is based on Tomato. Apparently, this issue affects only certain chips. I would like this capability but it looks like I am going to have to purchase a new router or something to get this as they have no immediate plans to fix this. I use Private Internet Access as my VPN. I have several sets of devices. One, I have three Roku devices. I can currently set those up and not have them go through my VPN. Two, a class of devices I want to go through my VPN – things like iPhones, laptops, Kindle, and some medical equipment. I want these to be default so if someone comes over and uses my network they automatically default to using the VPN. Three, a wired desktop PC that I control access to the VPN with a software app. Like I said the router currently handles all my device needs and supports things just fine. It’s just the fact that I can’t get the Sabai OS to save blacklist sites. Does anyone have any thoughts regarding this issue? Thanks.