@Kevin_Z Sim card fits the slot well. I tried differents ones. Even I did not touch it before it spoiled after a week working. Something wrong is inside the device Kevin_Z wrote @Wasec I see, thanks...

@Kevin_Z Kevin_Z wrote @Wasec Try to reboot the router with the SIM card inserted into the router. And you can unplug the SIM card and plug it back to the router and repeat it several times. If still...

The same story. Sim card is not detected anymore after a couple of weeks. Tried to change cards, plug/unplug, reset. S/N: 2197072002521 ancher MR200(EU)