Hi folks; I'm using ZC v1.3.9d with no changes made to the code recently.

Sometime over the last little while we've noticed that our American customers are only being offered the fairly expensive Xpresspost option for their packages. We sell items that range in size from tiny little bracelet charms to large, heavy hardcover books. No matter what the package size, or the weight, the only option available to various US addresses lately has been Xpresspost.

Packages destined for Canada or Australia, on the other hand, still have the full range of service options available to them: Priority, Expedited, Small Parcel etc. This makes me think it's not an issue with our package sizes at Canada Post's end or anything like that, since we're still getting the expected options offered for places that aren't the US.

To make things even weirder, I found an order dating back to the 4th of this month where a US customer managed to choose the Small Packet option for her purchase. I mimicked her order with my own store account, using her shipping address in my address book, and I was still only able to get the Xpresspost option.

I'm thoroughly baffled as to why this is suddenly happening. Can anyone tell me if there's a new package size restriction for items going to the states that may be limiting the available options? The thing is, when we bypass ZenCart and use our in-house shipping tools to see what kinds of shipping are available to our customers, we get the full range of options that the ZenCart shop isn't displaying.

Any pointers would be greatly appreciated. We've been double-checking the weights of our items and the sizes of our packaging and can't spot any problems there. Thanks much.