Only Some product make “The selected shipping method of this product is no longer available” but shiping exist

Only in some contexts and products, the message “The selected shipping method of this product is no longer available” appears.
and obviously shipping is not selectable.

On Aliexpress, however, shipping is visible and selectable.
Some idea?
I attach 2 images (other post).
it’s true that in this product 2 of the variables are not shippable… but it doesn’t make much sense that it causes problems.
Furthermore, I imported the product into the other store I have with ALD, and when I brought it back the problem disappeared. On this I had re-imported it but it didn’t solve it.

https://it.aliexpress.com/item/1005005776929266.html?gatewayAdapt=glo2ita