Can't unlock Huawei Mediapad M3 Lite (BAH-W09) because it's greyed out

[tsfm2]

Hi,
i now got my password and see the credits in the app.
However, I want to unlock bootloader from Huawei Mediapad M3 lite (BAH-W09) and actually just follow this instructions from XDA Forum:dcunlocker.PNG

https://forum.xda-developers.com/t/g...-dl09.4085383/
The first question is that in forums they talk about "reab bootloader code", such an ootion isn't available in DC Unlocker for me.
I think I would need to choose "Read Unlock ciode and enter into modem", is that correct?de

Whats the difference between read firmware code and read unlock code?
Problem is that I can't run these two jobs, only the ones via IMEI.

So what could be the problem here? I am connected in Manufacturer-mode and I have enough credits (4).
In the fastboot mode I do see Phone: Locked, FRP: Locked.

Or shall I just try it by IMEI? But I am afraid that it is the wrong option and then the credits are gone.
Thanks

Tsffm2

EDIT: Actually I can't even Generate an unlock code by IMEI coz this tablet hasn't SIM slot, so it doesnt have an IMEI Code :/
I need a solution for read the unlock code but it is still greyed out

[Valdemaras]

Continued on ticket system