DevAnimate since you cant connect anywhere else, it would be best to contact handy support directly as they should be able to troubleshoot the issue
I would ask though, how did you change your connection key (Handy key) without using the handy app? The Handy app is what you would normally use to change your connection key
Just to also check though you are doing this step -> after you change your connection key, make sure close the app on your phone (or better restart your phone), and also unplug the power to your handy toy
Then replug your handy toy, wait about 20 sec -> then open DeoVR (SLR app) and try reconnecting in haptics settings
Make sure you press the 'wifi' button on the front of the handy toy to begin the wifi connection process and be patient as it may take some time to connect
