You need to try a few things. Clearing your cookies & cache. Corrupted data for Amazon could be causing it to stay confused and broken. If that doesn't snap Amazon out of it, you need to disable all your addons. * [[Clear cookies and site data in Firefox]] * [[Disable or remove Add-ons]] One of your addons could be breaking Amazon. Try disabling any ad blocking addons or privacy addons. Even a addon like ClearURLs could be confusing & breaking Amazon. Another example is Malwarebytes Browser Guard. It does have reported problems of blocking the wrong things on a site which then break things like captchas, payments and so on.