everytime i try to connect to wifi it says incorrect password before i type in a password

Then it's time to schedule an appointment at your Apple Store Genius Bar for evaluation. The Wifi Radio may have failed, but Apple can test it for you.

good afternoon

There are several matters to look at for this to get resolved

I would go through this list and do a check list. Let’s see so you have done these steps...

1. Make absolutely sure you have the correct password.
2. Reboot your router by remove all power for 15-30 seconds. ... ✓✘
3. Forget the network, then try to reconnect.✓✘
4. Go to Settings/General/Reset - Reset Network Settings.✔︎✘
5. Make sure you are joining the correct wi-fi network, sometimes they have similar names as nearby wi-fi access points.
6. The wi-fi password are case sensitive and the wi-fi password must be an exact match.
7. Wait a moment or two, then re-join the same wi-fi network again and enter the correct password

I hope these will fix this problem.

See if anything in this link helps you: If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support

Can you connect to a network outside your home? Have you contacted your Internet Service Provider?

I have 9 apple devices in my family and all of a sudden NONE of them are connecting to our Verizon FIOS wi-fi network. I googled this question and tried almost everything that out there, but NOTHING seems to be working for us. After investing thousands of dollars in these iphones and ipad, this is totally unacceptable.

Are you absolutely sure you are using the correct password for your router?

Did you contact Verizon? The chances of 9 devices all of the sudden not connecting to Wifi has to indicate an issue with the router or your service.