No Sales When I'm away from game [duplicate]
Solution 1:
Evidently, other people have this issue, or similar as well.
Sadly — because of the arrangements with Disney — support for Tiny Death Star is scarce. The knowledge base for Tiny Death Star reveals only two separate bugs related to game progress, neither of which seems to match the described issue.
There is this discussion about it on reddit; this bug appears to be present on both iOS and Android in one way or another.
As a conclusion, contacting Disney support seems to be your best bet right now.