Can't get callmebot signal messenger to work with Home Assistant notify message

Hi Home Assistant Community,

I registered with callmebot for both whatsapp and signal messenger

I’m unable to use signal messenger via Home Assistant to send notify messages. It only works fine in Home Assistant for whatsapp notify messages.

this is what I did on /config/configuration.yaml for both whatsapp & signal messenger:

Note: changed actual phone, uuid and api to random number

notify:
- name: WhatsApp
    platform: rest
    resource: https://api.callmebot.com/whatsapp.php
    data:
      source: HA
      phone: +12345678910
      apikey: 1234567
  - name: signal
    platform: rest
    resource: https://api.callmebot.com/signal/send.php?
    data:
      phone: 25a7d32b-0c51-44d8-b11b-c5bc73294abc
      apikey: 123456

Note in signal I used UUID instead of phone number because it works in the browser test.

Test:
Tested Whatsapp via web browser and it works (received message in whatsapp):
https://api.callmebot.com/whatsapp.php?phone=12345678910&text=This+is+a+test&apikey=1234567

Tested Signal via web browser and it works (received message in signal app):
https://api.callmebot.com/signal/send.php?phone=25a7d32b-0c51-44d8-b11b-c5bc73294abc&apikey=123456&text=This+is+a+test

Some reference links I used as guidelines:
HA Whatsapp setup

Signal setup

Not sure what is wrong any help appreciated.
Thanks in advance.

Unfortunately I have same issue. Whatsapp works, but it does not with signal. Would be great to get some help.

Same issue.
Leet me know if you geet it resolved

Same issue.
But I have the solution. :wink:

notify:
  - name: Signal
    platform: rest
    resource: https://signal.callmebot.com/signal/send.php
    message_param_name: text
    data:
      phone: 25a7d32b-0c51-44d8-b11b-c5bc73294abc
      apikey: 123456