Due to unexpected technical problem, Shopify is temporarily unavailable. Please check back in a few minutes
Possible Solutions:
1. Try to delete your cookies and cache files:
https://support.google.com/chrome/answer/95589?hl=en
Also, disable the Chrome extensions you are using one by one on this page:
chrome://extensions
2. Click on your profile image in your Chrome web browser -> and then on “+ Add”.
It seems to be a Cache problem in old profiles of Chrome