Doesn't work in browser, online on mobile,

If I write and prompt and pres send, nothing happens in my browser, have tried firefox chrome and brave. Yet it works on my android

I tried to got to this site

and click the Chat icon i the bottom left, it begins to open what I assume is a chat support service, but half a second later it just disappear, this happens in both chrome and brave

This have been an issue for 3-4 days