It seems like Hologram NB-IOT don’t work in Sweden. Do Hologram has Telia as roaming partner?
Hologram does not support NB-IOT to many peoples disappointment 
See:
Hologram SIM - NB-IoT not working
NB-IOT in South Africa - #4
Coverage in Denmark NB-IOT - #2 by AndrewGifft
Up-to-date coverage information for NB-IoT and Cat-M
Quectel BC95-G / USA New Jersey - not connecting to network - #4 by SDamiano
Vodafone's NB-IOT Network Access - #3 by danielcbit
and others.
Hologram- please make this clearer! lots and lots of forum posts about NB-IOT.
Yes, that was an disappointment. And a few hours wasted…