In case you want to change the AliExpress account linked to your BestDealer account, you can do that very easily.
Go to All Shopify Orders, as the below screenshot shows, then click "Change"
A window to confirm will appear. Make sure to read everything before you go through.
After you confirm, the AliExpress account will be changed to the currently logged in account.
Please click on this link to change the account according to the steps above. https://app.bestdealer.com/order-group