Unable to clone site using Cloner plugin with multisite

Hello. I have been trying to clone my site at proformamilliondollar.club to a subdomain but nothing I've tried is working. I've confirmed with my host that the server is set up properly for multisite but I keep getting either 404 errors or the following:


I have tried disabling all plugins before cloning that hasn't worked either. Please advise with any suggestions.

Thank you.