Weekly Digest Email Query

I am practically new here. I have setup my community platform and have started enrolling members too. However, I am still unable to understand the feature called Weekly Digest Email, I have set it to every Friday in the setting however I didn't receive any Weekly Digest Email last Friday. I use Sendfox as my ESP and also have Bits Integration on my Wordpress however I am unable to connect all the dots. Can someone please guide me? TIA