One VMIN website is REDIRECTING to another on the same server!?

Hi, I have several wordpress websites on one virtualmin server. I Was using a plugin called “Really Simple SSL” to use flexible SSL with Cloudflare, but I wanted to install a LetsEncrypt certificate, and did so. I then disabled the SSL plugin from the website, and then I started getting the error “Too many redirects”. Shortly after, when I try going to that domain, it started redirecting me to another domain on the server!! I can’t seem to figure this out. Any help is greatly appreciated!!

I tracked down the problem to Redis cache. When I cleared the cache and disabled it, everything was back to normal. Im assuming both websites were using the same keys. Is there a way to set up both websites to use different keys, to make it work?