What to do if the domain used to work stably, but after manipulations in OpenServer it stopped working?

Question

open server

One of the strangest situations in all the time of development has occurred. I decided to install SSL on OpenServer, in short, something went wrong and it didn’t really install. I do not have the latest version and I decided to remove it altogether and install a new one. As soon as I installed a new version of it, I discovered that the domain itself does not work only on my device. The domain itself on OpenServer works without problems, as soon as I turn it off, I can’t immediately access the site. This is the first time I've ever been in a situation where I don't even know what to do. My two domains are not working, everything is fine on other devices, I put all sorts of certificates, some manipulations with the command line (this is when I tried to install SSL), so I assume that there is a mismatch somewhere. Thanks for the further help!