Hope you're having a great day!
You should contact Shopify Support under this web page with your store id: https://help.shopify.com/en/questions#/login
Live chat or email: https://help.shopify.com/en/questions#/contact
Eunice here from Shopify, thanks for posting!
@Michal_Morek is correct, in this instance, you will need to contact Shopify Support via the help center to resolve this issue. However, before you do so it's worth clearing your browser's cache and cookies. Sometimes, our browsers can hold onto old information causing issues like this to arise. To learn how to clear your cache and cookies please follow this link.
I hope this helps and good luck with your next venture!