I am having difficulty with this sprinkler controller. I bought the controller, installed it, got the SD Card error. Figured that out, put the SD card in (2.1.7 requires the SD) and programmed. Everything ran great for about 4 days, and then suddenly the app quit connecting. When I look at the IP address on the screen, it says 0.0.0.0 and 80 for the port. OSIP. another user, theemanofsteele, has also reported this problem and their solution was to revert to 2.1.6 and never run an SD, but that doesn't work for me. I would take any help I can get. Thank you!