Contract Launch Failed x2

We are launching a smart contract on ethereum. The code is good on test net but when the dev tried to launch it on ethereum main network its failed twice. First failed transaction cost $297.24 or 0.162074 the second failed transaction cost $341.69 or 0.186310.

It shows: Warning! Error encountered during contract execution [execution reverted]

Can anyone give some advise why this is happening so it doesn’t happen again. Dev said it’s never happened to him before and I’m also at a loss why it failed. $600+ is huge loss to take considering I got nothing back.

Please, any suggestions are greatly appreciated.