what modem/device do you have? 
Did you have it activated by the ISP? 

Where is it failing in the process?

Details are key, we need help to understand what you’ve done, what its doing, any other details to be able to help through the forums. 

If its a new device, you could always contact support

I just connected but the led ligth it's solid blue but when I try to use the wifi it's telling me to sign in but I did it and just keep telling me the same 

You didn’t give us any more info. Please see my first post and answer each questions.