This is Lana from Shopify. I see you're having some issues accessing your store so I wanted to help you out here.
There are a few possible reasons that you might be seeing the message that you described, and you can take a look at what it might be in this FAQ here.
Currently we are unable to look into your account details from the Shopify Community, so the best way to get to the bottom of this would be by getting in touch with our live support through this link here - they will be able to verify you and have a better look. This way you will be able to get further clarification and see what the next steps are.
Please do let me know if you have any other questions here!