Hi everyone,
We've released WPT 3.0.2 update, which includes the following fix:
[*] Addendio Plus plugin is no longer installed on all new WordPress instances by default. If you want it to be installed by default, go to WPT Global Settings and enable the corresponding checkbox.
This should address the immediate concerns about Addendio plugin being installed on all new WP instances. We are also planning to develop and provide an alternative way to search and install plugins/themes via WPT that does not require the Addendio service (this will take a couple of months, though).
If you want to completely turn Addendio off, you'll need to switch to the old WPT UI and disable Addendio there on the Global Settings tab. To use the old WPT UI, add the following line to your panel.ini:
[ext-wp-toolkit]
useUiLibrary = off
Let me know if you have any more questions, guys.