WAP2 is the security type instead of Wi-Fi password. No worries.

paotag was highlighting that the password is visible on the screen of the modem (without the option to hide or show it in the menu)!

In my option, it is designed for us to find out the Wi-Fi password in a easier way if it is forgotten...but it is not quite secure indeed.
To ensure Wi-Fi security, we can use tpMiFi app and block unknown devices. But it is for iOS only currently.
http://www.tp-link.com/en/download/M7350_V3.html#Apps

Now after several attempts I am finding that while the Laptop or/and mobile will connect no problem to the MiFi.
There is still no Internet connection on either T-Mobile or the other network provider AT&T when I can find it!
While our Free Unblocked Movie Sites Kickass Proxy Websites Best Sports Streaming SItes next stop is Brazil where my gut feeling is that I will have the same problem.