Wireless Joint

I got a Sierra EM7511, which I installed in this HM2U V2 USB to M.2 adapter enclosure:

https://www.ebay.com/itm/254986594489

The EM7511 does not have any IMEI number printed on it though.

I flashed it to the latest T-Mobile firmware on the Sierra website. Prior to the flash (screenshot attached), there was no IMEI either.

T-Mobile is asking for the IMEI number to bind the number to the device. Any idea of how I can find the IMEI number or generate one to give to T-Mobile? Thanks.

AT Command:
The QR code on the cover is also the imei

This one (photo attached) has a single QR code, which does not look like the IMEI. Others I've seen on the Net have 2 QR codes. The top one and another one below for the IMEI.

Wow. Never seen that.

AT command
Will give you the imei.

I THINK AT+GSN too but that may be a Quectel only command.