I have checked our Google ads and can see we dropped 30% clicks yesterday compared to our average and we are about 80% down today at this current time.
so unfortunately for us that would point more towards a drop in visitors rather than visitors not appearing in the analytics.
I have also noticed the number of visitors on Shopify analytics yesterday is a different number to one shown on Google Analytics, Google is showing far less!
The other thing that might be worth mentioning is I have seen active carts, checkouts and purchases being made whilst live is showing 0 people online so that’s a little strange!