You may be connected with the router,
but I assume, that, however, your password is wrong, and that you must enter it (again).
Make a test with a live boot media and follow the connection sequence after clicking on your router.
Then let me know, pls...
You can test your speed then with internet website:http://www.my-speedtest.com/
Important: plug out your ethernet cable!
-Linuxfluesterer (I love KDE ...)