Thanks for the feedback, tristan.green73! Yeah, it's a known issue that connectivity speed for Android tends to be rather unstable. It's definitely something our dev is working on improving. Android just seems kind of tricky to work with. Thanks for being patient, I'd say the WIFI is worth the wait, since you'd get to unlock door remotely, especially for temporary guests like plumbers, and stuff.
Have you tried doing a hard reset by pushing a pin/pencil into the tiny hole located at the bottom of your Sesame unit?