Password won’t work on Alexa and smart tv (CG3000DV260)

[Apfiffner]

I can sign in on my iPhone and my Mac but using the same password I created during setup won’t work on my smart tv or my Alexa. It’s a used device and we already reset it once.

[plemans]

Are you setting it up using wps? 

have you checked the ssid for any special characters/spaces in the ssid or password?