BUG: Add to cart blocked, checkout very slow

[venditdevs]

Somehow, when the API service of Sendcloud is unavailable of has been unavailable for a short time, the add to cart button doesn't work anymore till you delete the cookies on user level. De add to cart button keeps spinning/loading.

This will end up in sales losses, it's 100% sure caused by the Sendcloud module, we had the problem on a site, removed the Sendcloud module and the problem was solved. Deleted the module on 3 webshops (encounting) to resolve the problem permenantly.

Never ever should a module like this block the possibilty to put products in the cart and/or complete the checkout. Not even when the API service is unavailable or was.

Not going to contact the supportdepartment, allready did that but no solution, Sendcloud developers response: This is as designed.