Business in the style of the 90s: signed a contrac...

Business in the style of the 90s: signed a contract, agreed to cooperate, maybe even made a prepayment and expect the result? - this is mistake. The deadlines will be thwarted, the cost will be revised (not in your favor), no one is going to take responsibility for themselves (each employee will get the blame on colleagues) and take measures to resolve the situation. I do not recommend.