Okay – Twigo - Manage Twitter Accounts - Track Twitter Followers and Unfollowers - Gain Followers & Find Your Audience Review

This app it's good to start with but when you have it for a few weeks it kept saying error 89 invalid or expired token can someone tell me what this means or can the company fix it it's a good app I recommend it.?????
Review by Sammyrendon on Twigo - Manage Twitter Accounts - Track Twitter Followers and Unfollowers - Gain Followers & Find Your Audience.