furnaces not working, roof loot

Hello, please help, the electric furnaces in the apartment building are not working - the switches on them are there and they work - when turned on, they light up green, but the furnaces do not work, the elevator is also in operation, but the furnaces do not. And another thing - the loot on the roof is too OP, is there a way to delete it? We can't delete it in the loot editor - that would delete the loot in all similar boxes. And the sedan outside, it keeps renewing - could it be deleted? Thanks in advance for your answer.