After following the Twilio sms setup instructions from this link https://docs.civicrm.org/user/en/latest/sms-text-messaging/set-up/, I encountered the following error in the Twilio console: (Error 21614) 'To' number is not a valid mobile number
In my Civicrm contact information, I have entered + followed by country code followed by mobile number.
How to check if Civicrm is using E164 format for the mobile number?
What else can be wrong here?
What is Civisms ? Is it a valid Civicrm extension? What does it do? Why does it not appear as one of the extensions in the 5.72.1 version of the Civicrm Wordpress install?