D-Link DWR-116: Connectivity Issues on Lumia 625, Laptop, and WPS Option Unavailable

I have a problem with connecting to the wifi network in my phone and on my laptop. On the phones of 2 other people living with me, the wifi works amazingly, brother said something about the WPS option, and I can not find one in my phone and in the laptop too. On the second computer at home (the stationer) the internet works without a problem (it is connected to the router with a LAN cable).
When I try to connect to the wifi on my phone (Lumia 625 model), the message "The phone can not connect to the DWR-116 Wi-Fi network ..."
The computer is similar. When I try to connect, I have the message: "Windows could not connect to the network ...". I tried to fix it using the troubleshooter but there I just found the advice to reset the router (screen in the attachment), which of course did not help. The fault lies with the router - its exact model is D-Link DWR-116.

I am counting on your help and thanks in advance!

Moderated By jimasek:

I merged the thread

The problem is probably with encryption (unless you enter a wrong password)
Set encryption on WPA2-PSK or WPA-PSK
Turn off the automatic functions, set the parameters rigidly.
Try to set up a wifi 801 bg connection on a rigid basis (without "N")

What is set on the router you do not know. Perhaps the router allows devices with specific MAC addresses. Give screenshots from router settings.

Do you have access to the configuration panel of this router?

Check the signal transmission mode in the router.
WPS is a button on the router. Press it and try to connect 6

Lukalago wrote:

The problem is probably with encryption (unless you enter a wrong password)
Set encryption on WPA2-PSK or WPA-PSK
Turn off the automatic functions, set the parameters rigidly.
Try to set up a wifi 801 bg connection on a rigid basis (without "N")

I certainly write the password well, before everything worked without a problem, for a few days it began. How can I set this encryption on WPA2-PSK? There are only WPA (2) -Personal and WPA (2) -Enterprise options. And where can I set these parameters?

Added after 1 [minutes]:

kindlar wrote:

What is set on the router you do not know. Perhaps the router allows devices with specific MAC addresses. Give screenshots from router settings.

How to enter the router settings?

Open a Web browser and go to the address
http://192.168.2.1. In the username and password field, enter admin.

Everything is working. It was enough to reset the router by sticking a pin into this hole ... Thanks for your help