If you don't transfer to secondary fermentor you are risking yeast autolysis which produce off-flavours. When you transfer from primary to secondary right after FG is reached you can then harvest your yeast for another brew.
I used bazooka screen few times and it gets clogged up. It can be frustrating during wort transfer. Now I use brew bag during hop addition. It's big enough for a proper hop isomerisation.
Yeah I had that happening on day one. I had pump connected to the same power board as Robobrew and as soon as I switched the pump off the display went blank. Then I moved pump to a different power socket and the problem disappeared.