Also I would add Incase anyone else has this issue, that HTC added a new app to nougat update called "Boost+" and it can regulate apps in foreground and background. Open the app, then background, find the apps you want to be left alone, tap the app, then the third choice is "off". I'm not entirely sure if this is in addition to battery optimization, but whitelist the app there also.
I updated to nougat on HTC m9, Sprint a few weeks back, and I've not experienced anything like what you mentioned. I would reinstall BT and try again. Do you have any web filtering by an anti-virus app? What browsers did you experience this issue? I have 4 different browsers, Chrome, Firefox, Adblock Plus, and Brave. Non have had problems with browsing while on BT. One thing I did have to do after updating was to reset all app permissions, or actually I reset all app preferences and RE-enabled the permissions for each app. But largely I was having a battery drain problem, since fixed. I also re did my backups from "back up & reset" and automatic restore, just to make sure everything was fresh. Basically, I turn off then back on, which cleared the old out, and stored all new backup data.
@guiguilein Thanks for the ideas. Some users have already brought them up and I will try to work on them as soon as I can. I am at the moment reworking the website and I'm planning to have the app interface and website translated as with surprise I found out that the majority of our users are Spanish and Portuguese speaking (English is 3rd). Once this is done I will work on adding more cool features.
@android4life You are not really connecting to a VPN using Block This. It is just a clever workaround for the permissions in Android as hosts files and DNS entries only work on ROOTED phones. None of your traffic is passed through a VPN, so it is as fast as it possibly can be.
Good question. I'm just another user of Block this, but I think the apk should work with either Wi-Fi or cell connections. And may actually make your connections more secure, as it filters for malware as well as ads. I've not seen nor heard of anyone having issues on Wi-Fi, so give it shot. You may need to temporarily disable "Verify apps" in your Google Security Settings besides enabling "download from unknown sources" in regular security settings. Good luck.