Unable to connect to zoom on home WiFi Network

Since 3 hours ago I have been unable to connect to zoom meetings when connected on my home WiFi. I have tried using my iPhone, iPad, my laptop, a PC, my wife's laptop. Nothing works. WiFi is working well otherwise.

I am also able to connect to zoom via Citrix so that works too.

My iPhone and iPad are also connecting to zoom via 4G but not through the WiFi.

I have tried resetting router and devices multiple times. Also deleted the app and reinstalled it a few times. All devices are running the latest softwares.

Any help would be much appreciated.