WiFi connection but no internet

Dear All,

I have an ipad pro 11 inch which connects to my WiFi but not to the Internet. My internet router has been reset and other devices (Apple, Android and PC) can connect to the internet. I have reset the network settings and restarted the ipad a number of times but to no avail.

More confusingly, my ipad will connect to my Android phones hotspot and when connected this way I can access the internet. I am not sure what else I can do, it's getting very frustrating.