About a month ago I ordered 2 TPM 2.0 modules from an AliExpress vendor. The package turned up a couple of days ago but only had one module, not two. I contacted them but the response was urrrrgh, somewhat ambiguous (leading up to being pissed around) so I put in a dispute directly with AliExpress and BINGO, instant response and refund for the missing module.
With the refund, I ordered two more from another vendor which may turn up after Christmas and fortunately I am in no hurry so if they turn up, I have one for each of the Gigabyte boards.