iPad won't allow me to connect to websites like Reddit or the App Store after uninstalling VPN

Hi, so a few days ago I downloaded a VPN to watch something from abroad. Yesterday, I deleted the VPN app (VPNProxyMaster) and all of a sudden, I can’t access several websites/apps and most importantly the app store. I have tried everything such as resetting network settings, removing VPN profiles from settings, formatting the iPad and setting up again (I ran into a roadblock here because I couldn’t even sign in with my Apple ID even though I was connected to wifi). Weirdly though, if I tried using my mobile hotspot, I can access all the websites on my iPad but for some reason, it is not working over Wifi. I know my wifi works as my Macbook and iPhone both are able to enter the AppStore/reddit. Does anyone know what’s going on and how I can fix it?

Download that vpn again and set the servers to your real location or just turn it off in the app

If you reformatted your iPad then you isolated the issue away from the iPad. Can your phone visit these sites if you are only using WiFi? If it cannot then reset your router.