How get IMEI of Quectel module on RAK7258?

I get my nice RAK7258 but I need to activate the IMEI in my cellular provider.
I try to get the IMEI from the config tool but I dont find.

How can I get the IMEI of the quectel device ?

You could try to logon to console and send AT command to USB interface.
Another way is to open the case and take out the RAK PCI module. Below you see the cap of the Quectel EG95 LTE chip, where you find the IMEI printed.

If you are using the latest firmware, you can view it in status page, under Cellular block.