Huawei mate 20 lite bootloader-unlock doesn’t work due to FRP

I’ve got two huawei mate 20 lites in front of me, and I have the bootloader codes to unlock them.
But when I use adb fastboot to unlock them I get the message “Cannot unlock bootloader, you need to unlock FRP first” not with those exact words, but something like that.
How can I unlock the bootloader with the codes that i have without entering the phones settings to enable usb debugging? I feel like I’ve scanned the whole internet by now. Thank you!