Here's the response I got from Topguest:

Hello BA_Jfan - Thanks for contacting us.

Topguest uses an automated system to review member activity to monitor for inappropriate check-in activity that violates the terms of the Topguest program.

The spirit of Topguest is to reward members for actually visiting Topguest partner locations and interacting with those brands, then sharing their experience using eligible check-ins with their social network via a mobile device. An example would be a Hilton Honors member checking in via Facebook while standing in line waiting to check into their room. Check-ins as you simply walk or drive by the property are not.

We hope this information helps clarify why your account was suspended.

Best Regards, Topguest