Ok, after installing and testing the new version 4.14.2 of the plugin, I see that the issue has been resolved, and the add-ons are loaded correctly in the cart.
The problem is in version 4.14.0 and persists in version 4.14.1, we have made several sales where the add-ons have not been paid for due to this error…
Indeed, downgrading to version 4.13.0 has temporarily solved the problem.
