Hi xoibsurferx sorry to hear you're having this issue. Earlier today (and potentially starting last night) there was a flow issue. Information on inventory was not being properly transferred to Shopify and many merchants were seeing 0 stock.
However, it was just fixed about an hour ago. I would first double check to see if you are seeing any inventory now. If not, please email firstname.lastname@example.org. Our support team can have a look, or escalate it to a developer if they think it might be another issue!