Thank you for reaching out to the community forums for support with your store login! Can you share a screenshot of what you are seeing when you go to Shopify.com to login to your store?
This could be caused by an issue with your computer's browser cache or your internet service provider. I'll share some troubleshooting steps to help resolve this:
If that does not resolve the issue we'd be happy to continue assisting you through live chat, email, or callback. To contact our live support please follow this link: Shopify Help Center - Contact Support, sign into your store account, search for your issue and use the contact support button at the bottom of the search results to see all our live support options.