@user5b322ae3733af5.3 The plugin you mention was called “Gravity Forms SMS Pro” by Hannansoft
His website was http://ihannan.me but it’s down apparently.
I still use his plugin with Twilio and it’s working fine. No clue what happened with CodeCanyon but it’s not the first time something like that happens.
You can try to contact the guy, I’m pretty sure it’s him on Twitter: https://twitter.com/hannansoft
If you get in touch, please let us know what happened with that plugin since CodeCanyon is apparently booting plugin authors without saying why to the paying customers…