Unable to connect to home wifi but can connect to other wifi. All other devices connect to home wifi just fine.

I am so frustrated. I am trying to update to iOS 11, on iPhone 6s and my phone will not connect to my home wifi, however our other devices connect fine. I have restarted our home modem, I have reset network settings on the phone, I've chosen to 'forget this wifi' and re-signed in, I've rebooted. I've even parked in the mcdonalds parking lot to see if I could connect to a different wifi, and I was in fact able to connect to their wifi. Can anyone help me?!