What is not working exactly?
I have slow speed but it's working. I can't connect at all.
Great.
Do you see the word 3G or 4G in the upper left part of the screen?
Yes.
How many signal bars do you see in the upper left part of the screen?
I see 1 or 2 bars. 3 or 4.
Solution good.
Are you using the unit indoors or outdoors?
Indoors.
You have low coverage inside your apartment or house. Please place the unit near a window or outside. You need to get at least 3 or 4 bars to get good speed..