It's sad that the more generous, user-friendly trial policy led to worse sales. ;-(
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All of that could increase discoverability of the version with only 15 minutes free trial, so it would be essentially trading sales for advertising.
That said, 2 weeks evaluation on a tool you might use only once effectively means it's just free. Those who might have a need say once a month might just uninstall and reinstall it, and feel completely justified because they didn't get their 15 days, only one day.
You've just described enshittification 101.