Iphone 12 Pro Max Mirror Timeout whit Imac 21

Hello someone can helping, I have download the free version of manycam for testing, the mirror don’t work with iPhone 12 Pro Max and iMac , the problem is the free version or someone more ? I want to buy manycam but I need work with iPhone 12. I have try do remove many cam and istall again, restart iPhone etc… The camera read my device just say TIMEOUT old the time, so please can help me ?