Is it possible to make competitive Aliexpress applications on their API?

Question

API

Has anyone worked with their API? did you get the key?
I can’t figure it out for the second day, I found portals.aliexpress.com and https://developers.aliexpress.com/
on the first link, as I understand it, to receive links to promote goods and promote them. And the second to raise your store or to help others raise their store?

I want to somehow make my own version of the presentation of all Ali's goods, no matter what stores and no matter whether they pay for the purchase of goods or not.
Or just parse?
I will be glad for any help. Alternatively, you can pay.