Working with TheTexting SMS API

Hi, I just had a quick question for anyone who might have experience with this using a Digital Ocean Droplet. I am a student trying to use the TheTexting SMS API from my droplet to send SMS messages. If you are not familiar with TheTexting it uses PEAR and HTTPRequest2 to work. I have installed PHP, PEAR, and the HTTPRequest2 package and everything appear to be pointed properly and working from all of my test scripts. Locally I have the TheTexting service working perfectly. I also have already installed the mail services to output mail using PHP and that is working properly. Any information would be great! Thank you in advance.