I received my Grizzl-e Smart charger today. After a few hiccups, I was able to get it to working. The one that I received looks like it had already been used. The bolts were a little stripped already, the WiFi daughter card was not properly fitted to the motherboard, and there are a few small dings on the outside of the case. The cable and the connector both look to be in immaculate condition however.
If you don't have a server pre-set, then don't change the information at the bottom when you set up the WiFi for the first time. If you make a mistake in configuring it, you can unplug it, flip the #1 dip switch which is the reset switch, wait a minute, and then unplug it again and then plug it back in and try over. If you need to switch servers later you will need to repeat this process again.
Their website to configure the device is totally unintuitive and unrecommended by me. I will try to use an alternative app or website and report back if it's any better.