When buying imperial bux on Star Wars it’s not crediting the game

I've been building whenever I can, but I've only built imperial levels when I needed to because of the imperial objective. I decided to follow this strategy as the more non-imperial levels you have, the greater your passive money earned grows. Imperial levels only generate credits when you create all the required items on them, and that requires active play time. So they are non-earners when you aren't playing.

1. As far as I can tell, the VIPs are indeed random, with perhaps a slightly higher chance to yield Supply Officers. Unfortunately, they'll only show up when you're actively playing, so it might require more real time invested than you're willing to, and there's never a guarantee that any particular one will show up.

2. Imperial floor missions start small, but soon become hugely rewarding; the one I'm currently working on gives a reward of 50k, and previous ones have been in the 75-80k range. However, there's not much point in building Imperial levels until the mission asks you to, and it can be frustrating if you're asked for a specific one but the levels you build turn out differently several times in a row. In that case, it can be worth skipping a mission for a few Bux and getting something you're better equipped for.