External API call using http(s) for sending SMS messages

I am looking for an external call where I can format the http content within Adalo for sending SMS messaged using an existing sms gateway based on actions in Adalo.

This means I can send an SMS update when anything is changed rather than just new records.

It works using external an web link where I can add my api http request and collect the users mobile number but it then sits on the api send success page and never returns to the app.

http://api.smsbroadcast.com.au/api.php?username=notreal&password=notrealtoo&from=registeredmobile&to=usermobile&message=Hello%20world%20

This via an external web url leaves us on an API status page showing the message was sent.

Anyone know how to get the page to come back as an additional action of return back after the website redirection does not work (as expected) as the api page is outside the adalo domain and thus app…

Is the documentation for that API
have you tried to set this up at custom action?
https://help.adalo.com/integrations/custom-actions