How to make sure I've got Speech Central pro?

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iOS and iPadOS

I recently upgraded Speech Central from
https://itunes.apple.com/us/app/speech-central-web-text-to-speech/id1127349155?mt=8
and even though I supposedly have the pro version, when I go into Extras, it still gives the option of if I want to buy the Pro AddOn for Mx$99? Does this still appear in the pro versión, or what might have happened? I've uninstalled and reinstalled. Thanks for info.

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