I was able to access the community-plugins.json link you shared in the beginning. But then I swithced to my hotspot from my mobile and then it stopped working.
Now even if I switch to my older network, its not working any more.
And now that you mention it, I have actually used my hotspot from my mobile in the morning before posting this question.
But now I’m not able to get it to work irrespective of what I try.