Is Mobiwol incompatible with WiFi networks, e.g. my home network? I recently installed Mobiwol, following this answer, but now, my WiFi doesn't work. I haven't blocked any system apps from accessing the internet, but still, no WiFi. I looked at the FAQ for Mobiwol, which states

Why Won't My WiFi HotSpot Work?
This is not a bug. WiFi tethering and WiFi hotspots are, unfortunately, not currently compatible with Mobiwol being enabled.

I might be unclear on the definition of a &quot;WiFi hotspot,&quot; but my interpretation is that &quot;when you have Mobiwol enabled, your phone cannot connect to WiFi,&quot; which doesn't seem correct. It's also strange because Mobiwol's page in the Play Store lists &quot;Fixed WiFi and Firewall Loop issues ...&quot;, which makes it sound like WiFi should be working.
But, since my router and WiFi works on other devices, so it seems plausible that Mobiwol is the problem. If I disable it, the WiFi works.
Is Mobiwol incompatible with WiFi networks? Or does blocking something like the Google App prevent everything from connecting to WiFi?
The incompatibility of wi-fi and wi-fi tethering is due to the way most "no root firewalls" work. 


  Sometimes this depends on the Android version in question because some
  Android versions have a bug preventing tethering and the VPN service
  working together.


Some devices hibernate Wi-Fi, preventing tethering from working when the screen is off and this behaviour can be disabled in the advanced Wi-Fi settings.

Currently as it stands, it seems Mobiwol firewall still has no compatibility with wi-fi or wifi-tethering in which case I would recommend installing an alternative no root firewall e.g NetGuard.

Netguard has confirmed support for wifi-tethering as mentioned here:


  Can I tether / use Wi-Fi calling while using NetGuard?
  
  Yes, but this needs to be enabled in NetGuard's settings. Whether or
  not it works depends on your Android version because some Android
  versions have a bug preventing tethering and the VPN service working
  together.


You could also browse Izzy's F-droid repo with similar firewalls here: Internet firewalls and choose the one suiting your needs.

Reference


NetGuard: FAQs