Google cancelled this order. Reason: Other

[Brian]

We've been seeing a major uptick in the amount of cancelled orders the
past few days with the following message:

"Google cancelled this order. Reason: Other (describe below)"

However, there is no description and no way for us to verify if the
postback was actually called because the JWT is not presented on the
admin interface.

Is there any way for us to know if the increase in cancelled orders is
an issue that we can help mitigate versus something completely out of
our hands? More importantly, it would be helpful if an actual reason
for the cancellation was given.

[Brian]

Since we've started seeing this behavior, 51 out of the past 62 orders
have been cancelled by Google with the "Other" reason with no
description.

We also aren't receiving the postbacks because I'm guessing Google
stops the transaction before it even sends the postback.

[Brian]

Anyone else seeing a drastic increase in cancelled orders especially
ones cancelled by Google with no description? We've been seeing this
since about February 19.