I am having issues probably since I downloaded Catalina. My mouse keeps disconnecting. It's number2 I think for mm. Is there a bug in Catalina or should I get a new mouse. I have wired ones which are fine but the air has a lack of USB ports. Also I have to use my Android phone for internet since I don't have it yet. Having moved and all. Had to get Catalina from the library WiFi in parts so maybe my copy is broken or something?