I also seem to be losing money. I have just reached level 33 this morning and have not been able to get over 500,000 coins for a month! I am trying to save up so I can so an expansion to compete a goal. I have "expensive" 1 day items for sale, the ones that are supposed to earn you the most money, yet I have had under 450,000 for a month! Even if I don't purchase expensive items or any items at all. Every time I check the "while you were away you earned", then I play for a minute and the number magically decreases back to what I ended with the day before.
Can someone please tell me how to earn more money or how to keep the money I have without it dissapearing?
It's getting to the point where I barely want to play cause I can't do anything with my coins.