I downloaded the Tether app to connect the RE205 V3 to Wi-Fi, but once I go to add devices it asks me to put in a password. However, the requirements for the password is that it must have letters, digits, and underlines. What does it mean by underlines? I have tried using underscores and hyphens, but those don't work. I have also tried putting in the exact same password I use for my login but no dice. I am doing this all on mobile by the way