Someone (or app) altered the combined shipping and it is not correct.

[thebookhill]

The buyer bought 2 items. Each item had 4.63 shipping, but somehow the buyer paid only a combined shipping of 5.38.

I do NOT have combined shipping rules.
And, I did not send a invoice with an altered shipping amount.

The buyer should have paid 9.26 for shipping.

[thebookhill]

Nothing else wrong or weird seems to have occurred.

But as a precaution, I did reset my password, scan my computer, cleared off all history, re-booted my computer, etc