@Alriyada 

WPS is never active on the Deco. You will need to manually log into your Deco app, go to Tools > WPS, and tap the WPS button to activate it. There will then be a timer. Once the timer reaches 0 then the feature is disabled again.

Thanks for your answer Tony 

@Alriyada 

Very welcome.

As a side note, please visit our global forum located here if you are located outside the US: https://community.tp-link.com/en

Main reason being our products are region based and solution may not be for that specific region. Obviously this case does not apply, but to avoid any potential issues in the future.

@Alriyada how do you tell if the wps is disable or enable？ it's not very clear by clicking that, nothing tells if it's diable or enabled