Spritz AX (GL-X3000) problem with cellular

Dear,

I have Spritz AX Router, witch work great from about september.
Now i have a problem with our SIM card from carrier (A1 Slovenia).
FW for router and 5g modem is lastest.

I tested with SIM card from another carrier, this work great.

I also received a new SIM card from A1, but it's no better.

I think there is problem with APN settings, A1 has 2, mms.simobil.si and internet.simobil.si.
In most cases router has been connected to mms.simobil.si, but this is only for MMS, and internet not work.

Now i connect SIM to original carrier ZYXEL NR7302 router and all work normally.
Maybe info, i have static IP from carrier, and ZYXEL is in IP Passthrough Mode.

Also, i probe manually settings for APN, but unsuccessful.

Do you have any recommendations what else can I try?
I any option, that advanced setting from ZYXEL can be used for arrangement in GLINET?

I would like to fix the issue because I have an external antenna on the roof and it works very well.

Thank you for help.

Best regards,
Jernej

If you put the SIM on a regular smartphone, does it get mobile data from it?

I tested it, mobile data works normally.

The Zyxel settings for APN should work on your GL.Inet router. Try it.

Did you try manual setup and
a.) setting up that APN (internet.simobil.si instead of mms.)

b.) Below the manual APN settings, you can setup a PIN. I used 4 different cards from different providers that worked great, but the fifth one I tried didn't — it was the only one that required a PIN code and I forgot to enter it... And one hour later I remembered. Put in the code, only than it'll register to the network, but still fail.I now had to enter the APN again, and this time it worked.
ALl the best @jernej, and I hop you'll get it to work with A1, too!

Hello!
If you'd like, you can make a manual APN configuration:

For Protocol, try QCM first and if that doesn't work, QMI is your next best bet. For Port, find the modem (I think it's WCMDA). Choose authentication CHAP/PAP and use:
Username: simobil
Password: internet

REF:

https://www.noabe.com/help/index.php/internet-apn-configuration/

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