Still no word from PayPal MTS about any progress or ETA on a fix at their end. The ticket we opened with MTS is Case # 10167138.

I have followed up on our PayPal MTS ticket once again to ask them for an ETA on their resolution of the issue.

We're still only getting vague assurances like this from PayPal MTS when we ask for a status update or ETA:

We are aware of this issue and our engineers are currently working on it. Will let you know once there is an update on the matter.

At this point, we'd like to reiterate a suggestion we made earlier in this thread, during the first time this issue occurred last year:

If you'd like to offer buyers a different checkout method, this help page lists all the payment services we support3; any of those will add a separate checkout button in your E-junkie Cart for buyers to pay directly with a card.

If you do this and also want to remove the PayPal checkout option from your E-junkie Cart until they resolve this issue, you can do that in your E-junkie Dashboard under Manage Seller Account > Edit Profile > More Payment Options > Show PayPal in shopping cart (unfortunately that can't be disabled if you're using PayPal Payments Advanced or Pro).

Of those services, we'd recommend Stripe1 in particular if you're based in any of the countries they support, as they're pretty quick to approve new accounts, very easy to set up with us, and don't even require buyers to enter their card billing address during checkout.

Better yet, if your site loads with an https:// URL and has our cart appearing as an overlay within your own sales pages3, our secure checkout screen for card payment can use the same overlay as our cart, which helps reassure buyers for better sales conversions.

Sorry to hear you're getting the runaround from PayPal. Evidently their right hand doesn't know what their left hand is doing, so every MTS ticket anyone opens about it is getting treated as a separate, isolated issue with little if any context relating it to other pertinent tickets, rather than instances of a single, common issue at their end.

At least that "Jeremy" seemed to be aware of a "callback URL" issue they'd mentioned in a related ticket, which we'd already responded to as a red herring -- they were saying our callback URL didn't return any shipping options, but that was a case where the seller they'd tested with doesn't even sell any physical goods that require shipping, so of course no shipping rates were returned in that scenario, where (until this issue arose) they'd heretofore always applied the precalculated tax amount we passed to checkout in the first place.

I don't know if responding to your own MTS ticket would do any good, but if you do, it may help to reference our own MTS case # 10167138, where PayPal has confirmed the issue at their end that they're working to fix and been escalated at their end.

PayPal is being cagey about exactly why or how the problem is happening, so we have no way of knowing whether their own purchase buttons would be affected or not.