@White_Sands the reason you have no traffic is because of this shopify error. Legally speaking I can’t say it’s the reason you have no sales, but it’s been verified that this issue is the reason for the drop. Sadly enough there’s been no reporting on it but from what I know that won’t be the case much longer. Those looking into it are also waiting on Shopify to release their statement so it’s a bit of a stand-off.
As a side note, my competitors don’t use shopify, they didn’t get their ranking taken. My 3 biggest competitors for one store always scored lower than me on the SERP, now they’re on the top and I’m in spot 6 or 7 instead of 1 or 2. I spoke to one of my friendly competitors yesterday, their traffic is up since 3/15. Turns out effectively delisting your website from google makes your competitors fill the void for the same search terms.