Send SMS with USB GSM modem when alarm triggered

Hi, I need help with usb modem configuration, I have a Huawei E1752 modem connected and it is loaded with sms gateway integration. The integration shows signal strength but the network status is constantly “requesting network”. The simcard is without pin code and is functional however sms cannot be received or sent via homeassistant. The log shows this error:
Logger: homeassistant.components.sms.gateway
Source: components/sms/gateway.py:209
Integration: SMS notifications via GSM-modem (documentation, issues)
First occurred: 23 June 2024 at 13:34:22 (1014 occurrences)
Last logged: 12:07:35
Failed to initialize, error ERR_DEVICENOTEXIST
Would anyone be able to help me with this problem? Thanks

good morning,
I use a 3g key to send sms.
but how do I create several recipients?
i tried to add this in configuration.yaml

mane: sms_x
 - platform: sms
   recipient: +33612345678

but I get an error when checking the configuration
then I tried

notify:
  - platform: sms
    name: sms_x
    recipient: +33612345678

no error when I click on “check configuration”, but after a reboot if I go to
development tools → Services I don’t see notify.sms_x, there’s only notify.sms

I would like to create several recipients:
sms_x
sms-y
how to do