Do you have problems with Aliexpress sign in?
A common issue in Chrome (I don't know if it happends on Firefox or other browser), is that Aliexpress cookies has problems when you want to access to your account.
When you press Access now, the page reloads, but the identification section doesn't shows your name.
To fix it, a solution is clear all cookies, but you can delete only ali* cookies as follows:
Go to chrome://settings/
Filter by ali and click on Remove all shown.
Now you can login again without problems