Monopoly Sudoku: Error when Purchasing Upgrades - Code: PCE-7 - May 2026

Monopoly Suducko sucks.  something has changed on the game.  the last several days when I get up to almost 10 million dollars I go out and buy the houses to advance it wont let me, keeps giving me some error notice.  then when it works like tonight I bought 3 houses then started getting the error notices, I had 6 millions dollars left.  So I exited the game went back into the game to retry and my money went down to 1.6 millions dollars.  when the heck is going on?