How high was your chlorine when you tested the pH? If it was higher than 5ppm, then you'll get falsely high pH. You can dilute the sample to test when your chlorine is past 5ppm. Take 1/4 cup pool water and 1/4 cup distilled water, mix it and then test pH with that.
For the chlorine side of the tester, if your chlorine is higher than 5ppm, you can use the chart at this link to help you interpret the colors that are off the scale of the tester:> http://pool9.net/oto-chart/
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