Aliexpress weirdness between website and mobile app

As a regular Aliexpress shopper, I have noticed some changes over recent months and some new differences between the website and mobile app.

The biggest change relates to bundle deals.

On the website, bundle deal items you add to your selections can be checked out separately. Select any three and you get free shipping. Select six and you usually get some money off.

But in recent months, the separate bundle deals checkout seems to have disappeared only on the mobile app. Bundle deals items I added on the website on my desktop don't appear in the bundle deals cart on the mobile app -- the app seems to show my normal cart.

Then you have choice items. Once you reach the minimum spend for choice items ($15 here in Australia), you qualify for free shipping. That works fine on both.

However, the shopping cart encourages you to buy three items for an extra discount ($2 here). But once you add three items there is no discount on the website, despite the offer showing on the same page.

View the same shopping cart on the mobile app, and the discount does get applied. So weird.

So if you are buying bundle deals you should use the website, and if you are buying choice items you should use the app.