Ash here from the Shopify team. Welcome to the Shopify Community!
I'm sorry to hear of the issues you're facing with logging into your account. I can definitely appreciate the frustration this would cause. I followed the link you shared to your live site, and that appears to be accessible and functioning as expected which is good news. Are you currently still experiencing the issue with logging into your admin? If so, I'd love to get some more information from you so that we can troubleshoot the issue effectively. Could you please reply to this post and address the below points for more context on this issue?:
If the issue is still persisting, please provide me with the above information as well as a screenshot of the page you reach when you try to log in. I look forward to getting some more information from you, and getting this issue resolved shortly!
Ash here from the Shopify team.
Thank you for getting in on this thread. Please refer to my post above in reply to @shopeverclever, and feel free to reply to this post with your results as well. For the last point in my initial reply, rather than clicking the link I provided, try adding "/admin" to the end of your own shops URL for a direct log in link.
I look forward to hearing back and helping get this issue all sorted out.
I'm so glad to hear you've been successfully able to access your store again! Did you run through the other troubleshooting steps in my above reply as well? It's hard to say exactly what was going on now that the issue seems to be resolved, but if you ever run into a similar issue, please don't hesitate to reach out. We'll be happy to take a look and offer our assistance!