TP-Link Archer NX200: Disconnection issues with MVNO CoopVoce (Vodafone network)

Model: Archer NX200  

Hardware Version: V2.2 (EU)

Firmware Version: 1.2.0 3.0.0 v60e0.0 Build 250725 Rel.73467n

Hello, I live in Italy and I am experiencing disconnetcion issues with my TP-Link Archer NX200 router. I am using a Sim card from the mobile virtual network operator CoopVoce (which operates on the Vodafone network). I have added a new APN profile with the following settings:

PDP Type: IPv4

APN Type: Static

APN: internet.coopvoce.it

Username: (empty)

Password: (empty)

Authentication Type: CHAP

Data Roaming: Enabled

NAT: Enabled

Mobile Data: Enabled

The router detects the network and bands (the signal is strong and it uses LTE or LTE plus network), it works but each 2 hours (It depends, it's not at the same timing) mobile signal Is disconnecting and the router loses the internet connection for 50/70 seconds, then reconnecting automatically.

I have alteady tried to fix the band using only B3 for instance, but the issue is still there.

Can you please let me know of this is a known issue?

It's really frustrating especially when doing real time meetings.

Thanks for your help.

Kind regards

Claudio