Question about Lenovo Tab M10 FHD Plus (2nd Gen)

Hello, does anyone's tablet recognise the SIM correctly? According to the manual, 3G 4G but also GSM should be supported, but it does not recognise it. I wanted to be able to install Whatsapp for my child, as is possible on Samsung tablets without any problems. If it doesn't work at all (except with North American data SIMs) this tablet would be really rubbish. I am grateful for tips