RUTX50 eSIM to SIM - strange network behavior

NETWORKING SOLUTIONS
1

Recently I’ve started using my RUTX50 in preparation for installation in our campervan.

As I want to be able to leverage eSIM functionality, I purchased 5ber - an eSIM to SIM solution that is able to load the eSIMs (through an Android) which allow me to use it on any other non-eSIM supported device.

What I noticed is that when these working eSIM profiles (that are loaded onto the card) are used in the RUTX50, they work for about 30 minutes, and then get rejected by the network - afterwards the profile is bricked and then also doesn’t work anymore in the phone when inserted back.
It seems that this is not the case for the Android phones themselves, the profiles remain active and don’t get blocked (as long as these are not used in the RUTX50)

The error the RUTX50 is providing after 30 minutes is “EPS services not allowed in this PLMN”.
What is the RUTX50 doing compared to a phone?

2

I’m asking the same question to the eSIM provider, and they indicated they are investigating blockage on the RSP / SMDP+ services - apparently the service that registers the profiles for use.

But it still doesn’t explain why this doesn’t happen on a phone, but does in the RUTX50.

3

Attached my filtered log file (dnsmasq and wifi stuff removed)
esim-log.zip (5.1 KB)