Windows 10: Can’t connect to wifi with correct password or WPS

I'm setting up a mini PC and for the wifi setup it has a comfast wifi adapter, I was unable to connect to my wifi using my password but was able to connect using the WPS button on the modem. Wifi was working fine for a few hours. I stepped away from the PC and when I returned wifi was disconnected. Trying the WPS button didn't work this time and I was prompted to enter the wifi password. When I enter it I get the verifying and connecting message but then i get can't connect to this network message. I am entering the correct password but it is not connecting.I have tried the following:Update

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How to connect to WiFi without using password?

Yes, you can connect to locked WiFi Without password by using the functionality of WPS (WiFi Protected Set Up). Most of the Routers support WPS function. For this trick, you must have physical access to the Router of WiFi network you want to connect to. If you are on Windows or Android device, then you are lucky, this trick will gonna work for you. Because Apple Ecosystem doesn’t support the WPS function.

You can do this in simple steps:

Step 1: Go to “Settings” in your Smartphone –> “WiFi” –> Go to “More” or “3 Vertical dot icon” and search for “WPS Push Button” option and just Tap on it.

Step 2: Now, Also Tap the “WPS” button on the backside of your Router. Within some seconds these both devices pair up and your device will connect to WiFi network. That’s It!!!

Try it.

[Source Reference]: How to Connect to Locked WiFi Without using Password

 

Phone won't connect if I change wifi password

My Nokia Lumia 520 never had any connection problems, but today it won't connect not even when I press the WPS button on the modem or type the wifi password. I get the message:

''The Wifi network didn't respond, try again later''.

Wifi is working fine on all other devices (pc, laptop, tablet and other phones) so I'm guessing it's a phone issue? Phone's wifi was working fine yesterday.

 

Phone won't connect if I change wifi password

I've finally figured out what happened, but the problem is only temporarily solved.

I had changed my wifi password. And the phone won't connect with the new password. If I change the wifi password back to the old one it connects.

So it's definitely a phone issue.
I wish I could change my wifi password and have my phone working..