First of all, I want to say thanks and good job for the AMP.
The problems:
1. If the product is only 1 product in stock, the woocommerce don’t show the “quantity selector”; so… when you press “buy now” it opens like it should, but there is an empty space where “quantity selector” should be.
Beside it doesn’t look good, it’s very confusing for a buyer after he presses “buy now”, he has another “buy” with an empty field.
I think, there are 2 options: one is to always show the quantity or 2, better one, change the behaviour of the buy now button if only one is in stock (to “bypass” the second step)
(if is not clear, check the printscreen)
I’ve resolved this (temporary) by adding a custom code in functions… but this is not a solution.
2. Shipping metod. Also, in AMP (I’ve check your demo, also) the shipping cost doesn’t appear. This is a major problem. On regular mobile version, it’s ok.
3. Also, I’ve seen that there is a little problem with application/json markup (in products):
a. The microdata on a product is “blogpost” instead of product
b. It’s missing the logo, which makes it invalid.
Thanks,
Raul