Probably I’m asking for trouble saying this, but if you are comfortable with such things it appears you can edit the following key in com.oryxdigital.EasyDataTransform.plist in ~/Library/Preferences (with the app not running, of course):
<key>last_updated_check</key>
<string>2025-02-26</string>
I’d think increasing the month or year or whatever would disable that check for a while.