What happened to my paid version? – Prime Sleep Recorder Review

I like the app; it’s been useful in tracking my sleep patterns and snoring. I bought the full version so I could store unlimited recordings. Unfortunately I had to delete it for just a few minutes tonight due to a storage issue, and when I reinstalled it it had reverted back to the free version. How can I fix this? (And give you back the two stars I took away because of this problem. :-)
Review by 2005Phoenix on Prime Sleep Recorder.