Problems with connect, reconnect and restart/reset

I have a problem with all kinds of connection processes. Every time I switch on, reset (>8s) or simply reconnect when returning with my phone after being outside of the wifi network (the phone, not the Mini) there is at least one problem. After restart I never know which wifi the Mini connects. When I am lucky I can connect my phone to the different networks, one after the other, and one of them works. Pooh. If not I have to connect my Mini as a new Device. And still try out every network. And then I always have to type in the password again. This is about 50 % of all restarts. Worst case is forcing the app to stop, switching off the mini and try again or even reinstall the app and try again.
A simple reconnect when the phone returns to the wifi networks has better chances. ~80% works, the rest refuses. Then I have to restart the Mini, see above. Because I have to recenter after every pattern and a recenter often requires a restart of the mini this is very exhausting. First thing should be to find a way to connect to the same network all times.
Next to remember the password of the networks the Mini was connected to. This would solve most of the Problems. Maybe the team should have a look at the reconnect problems after the connection was ok a few minutes ago. The recenter problem is discussed at different topics.