I developed the same type of problem (no auto-connect) after having the unit for a week with no connect problem. I reinstalled "Helix Stadium" and that did nothing for me. I ended up rebooting my computer and that seemed to work . . . (cross fingers).
Additional Info: After working correctly for a few days, I had to reboot once more to get Stadium Edit to find unit over WIFI. It seems to be random - don't know if it is my computer or the Stadium at this point. I have another computer that I can use, but it is loaned out at the moment. Once i get it back I will recheck with that computer
Syphus