After selecting a plan, my store is now unavailable. I've attempted to chat, but I cannot chat because you have to select your store name. Since my store is unavailable, I cannot make a selection.
Sophia here from Shopify. I'm sorry to hear that you're having trouble accessing your account.
Are you able to share a screenshot of the message that's coming up when you try to login? The specific error message you're seeing will help us determine next steps. If it isn't something we can troubleshoot in this public space, our support team is more than happy to help you via live chat, email, or callback. You can access the contact options in the Shopify Help Center without logging in by selecting the "Continue without logging in" option.