X5 Slice

A simple life hack to a higher donator rank. It's a long route, but worth it. (This only works for normal accounts.)

Bond prices are currently going for anywhere between 20-30m, with your credits you can buy mystery boxes which sell for around 10m each. Every 10$ gives you 100 credits which exchanges for 2 mystery boxes. So your loss is minimal and you can keep doing this to increase your donator rank.