Is this problem still ongoing? It does appear to be working well for me at the moment.
In these cases where a store is not accessible, my advice would always be to rule out a local device or browser as a first line. If this is still ongoing, can you please try the following steps?:
Clear your cache and cookies on your browser. After this, completely reboot the browser.
Try on another web browser or an incognito window.
When using incognito, if you are still experiencing a display issue, confirm you have disabled browser extensions as these can change how the pages look.
Try another device or on the Shopify Mobile app.
Try another internet connection (example, switch to a cellular network on a phone rather than wifi.)
Ensure there are no pop ups being blocked in the web browser.
Ensure you do not have any firewalls or pop up blockers enabled on the device
Let me know if this works for you. Your store is amazing, you clearly have a real passion for hair care! I’d love to help you out with some business growth ideas - how do you feel things are going at the minute? Is there anything you’d like to improve or change?