Note that the Clickatell SMS gateway on HeroTill requires you to have a normal account and not a developer account
HeroTill’s Clickatell SMS gateway integration used to make use of an API sending method.
As Clickatell developed further we changed the SMS gateway integration to adapt to their new methods.
Clickatell now makes use of the new platform sending method, this is what we have adapted the integration to.
Please see the following link to the correct Clickatell Creation for Account with the New Development for SMS Sending as a Communicator:
https://www.clickatell.com/sign-up/
You may also contact Clickatell Support for them to assist with Account changing if this is possible from their side:
https://www.clickatell.com/contact/contact-support/
Feel free to call or email HeroTill support if you need any further assistance.