I've noticed recently that my Edge 840 doesn't reconnect to wifi. If I clear all wifi settings, then connect to my network it syncs fine. But after it turns off, once it wakes back up, it won't connect to the wifi network. It seems to be stuck in a "connecting" state but never connects. The only way to get it to connect is to delete the wifi network and then re-add it and it works again. This is of course not how it's supposed to work, and is a giant pita.
Any thoughts or ideas?