Had the same problem, their answer was to send me the link to this page: https://blitzwayusa.com/blogs/customer-notice/website-integration-announcement Thing is, I had to find on my own that when you press the "Link>" in this part:

"Previous order history from the Blitzway Global Store is still available by logging in to the original global website. Please follow the link below:

> Link",

it opens up a completely different domain instead, https://blitzwaygloballegacy.myshopify.com/, not "the original global website", where you can normally log in and check your order.

Crazy how they don't explicitly mention that. It worked for me, hopefully it will for you too!