WAP LTE Sim not working

New AP, fresh setup no other settings(Tried factory reset).I cant get SIM to work, i input proper APN and pin but nothing is working, if i press scan under LTE interface i get Modem not configured, what possible im doing wrong?The sim it self its form TELE 2 provider in Croatia and works in another modem just fine.
Also router is random rebooting here and there, getting Improper shutdown in logs, and also Router rebooted because some critical program crashed, tried updating to latest Routerbaord FW and latest 6.41.Rc38, nothing is helping.

Do i have defective unit?

EDIT:I downgraded again to 6.40.4 and now all started working properly..

We are working on a fix for the v6.41rc38 version as we have seen it crash with the lte.
When we will release a new RC version you can try if it works.

If it fails then please enable the lte debug logging and email to support the output file after you see it fails:
/system logging add topics=lte,!raw