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Drag the Ink2Go icon to the Applications folder.
In the application folder, double click on Ink2Go. You will see a dialog box as shown. Click on Cancel.
In your Mac's System Preferences > Security & Privacy > General tab:
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You will see a warning message, as shown below.
Click Open.
You should be prompted with a dialogue box to Open System Preferences. If you are not prompted, you can click the Record (red dot) button of Ink2Go, choose the capture settings, then click Start Capture. You should then be prompted with the dialogue box to Open System Preferences.
(A third way: open System Preferences > click Security & Privacy > click Accessibility on the left sidebar.)
In your Mac's System Preferences > Security & Privacy > Privacy tab:
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Scroll on the right menu, then check Ink2Go.
If Ink2Go is still open, you will be prompted to Quit Now or Later. Click Quit Now.
You should now be able to use Ink2Go.