Sorry to hear about the issue. There could have been other conflicting plugins that would have caused this error once they were enabled at the same time as track that stat.
Currently we have many people using the most recent version without any issues, so this could be caused by a number of reasons.
I think a whole day is pretty ridiculous for response time from your current host and I do apologize for the trouble.
Typically when this happens, you can simply rename the actual plugin folder to disable it. Then you can contact us to let us know so we can look into the issue further: http://trackthatstat.org/contact-us/
Please let me know if you have any questions.