We suggest you to please signup (click on TRY option) from below link with "Automation" subscription plan and let us know once you are done with registration so that we can verify your account from our backend as well.
log-in to Customer Portal with your SF credentials and follow the below steps:
Click on Get Started
Then, click on “Install”
Then, select “Click here to Install SMS Magic”
Then click on “Install for all Users” and then click on Install.
After installation, complete setup wizard as per below link (follow steps 3 onward) from SF org -:
Then on “SMS-Home” where you will be able to view your Account details, SMS Credits and subscription type