So this has been bugging me for ages. Whenever I wanted to switch the server settings in the K2 task list on iOS I assumed there was no easy way from within the app, and there isn’t. So I was forced to remove and re-install the app all together.
For some reason I never looked up the “Settings” tab within iOS and then under the K2 application.
So if you want to change your k2 task list settings, simply open up the Settings within iOS, scroll down the the “K2 Task List” and open up that section and hey presto!