Booting Vizy into Safe mode will force Vizy into access point WiFi mode. In other words, Vizy will not try to connect to a previously configured WiFi network.
To boot Vizy into safe mode, start with your Vizy powered off, but plugged into power. Instead of pressing the button momentarily to power your Vizy on, press the button and continue to hold it down. After a few seconds, you'll see the LED start to blink. The LED will turn red and turn off, turn red and turn off, and repeat as long as you hold down the button. If you release the button when the LED is off, Vizy will boot normally. If you release the button when the LED is red, Vizy will boot into safe mode. See the video below.