They are signalling that they intend to propse an amendment to Labor's plan in Parliament, and it is better to lay it out in your platform so you can point to it and say you committed to this in the election and it isn't a surprise.

The same thread on Reddit reads like a Liberal Party brainstorming session.

They give you a to-do list of all the tax years you need to file.

They don’t seem like they have background installation mechanism right?

From the readme on GitHub:

Auto (unattended) updates are unsupported due to a lack of any capable Flutter plugin.

If it's restricted to MS Authenticator it's very likely push notifications.

I went towards the end of the day and they didn't even ask for a reason.

You're looking more for a disruptive or strategic vote.

As for how to strategically vote: look at those preference flows from earlier & pay close attention to the votes per candidate at each stage and how close some might be. Your goal is to try and push one of those last-placed candidates in one of the elimination rounds ahead of 2nd last through your preferences (easiest is to give them your 1 vote).

The ideal outcome would be to get certain preference flows activating earlier to try and alter who makes it to the final two or three.