TxtFlo is categorized as an Email Service Provider because it functions as such - contacts are sent to TxtFlo and communication with those contacts is then initiated from TxtFlo. TxtFlo is not equivalent to a SMS provider, such as Twilio. TxtFlo is not a tool to send SMS autoresponders.
Go to Admin->Plugins->Email Service Providers.
Scroll down to TxtFlo.
Click the green Activate button to activate TxtFlo.
Click the green Connect button.
On the top of Plugins page, you will find TxtFlo is Enabled. Click the blue Edit button.
Enter api_token (obtained from TxtFlo), CompanyID (your TxtFlo company ID), CampaignID (the CampaignID you created on TxtFlo)and CampaignName (the TxtFlo CampaignName). Click the blue Update button.
On the right of the same page, click the green Route button.
Select Sale on Customer Type, select Konnektive Campaign and Konnektive Product, select TxtFlo List. Click the green Create button.
NOTE: A real phone number is required for testing. When you send a test order, please include a real phone number.