Limit? Are you kidding me?

I do love this app and have NEVER had inaccurate info but today, my husband is on an overnight trip to Ireland and it says Ive reached my limit for checking his flight. For $5 I have a limit? I check the map often because I like that it shows me the location of the plane. But I seriously have a limit?!??!!

Tahangar about Flight Status - Live Flight Tracker