It seems like your Mac Mini is barely working. There are some funky things going on that I don't understand. You can continue to use it, but I recommend that you do not store anything sensitive on it. If you store something sensitive or important on it, tell me and I'll back that up specifically. I have disabling the backing up of your computer from now on because I don't trust it right now. Let's get you another computer some time in May maybe when we'll have more time to work on it.