My macbook can't find home wifi

My macbook air can't find the home wifi. It can, however, find the neighbours' wifis. The home wifi is working fine with my other laptop and iphone so the wlan router is working.
I can't add the network by manually entering its name (says "no network found")
This happened suddenly without any changes to my computer or the wifi settings.
My computer is a 1-year old macbook air. I haven't found any threads with a real, working solution for this issue so any help is greatly appreciated!
Thank you

ojjo8 wrote:
Do you honestly not think those were the first two things i did when i encountered the problem...
And unfortunately no, neither option works.
Thanks
Many people do not power cycle their routers when having wifi issues.
When attempting to get help here or on any forum always include everything you have attempted to solve the issue and never assume anybody knows what you have or haven't done unless it is explicitly stated.
Next troubleshooting steps:
- Network Preferences > Advanced
  Delete all preferred networks, restart
- Change your router's wifi channel to a channel > 5 from the one in current use

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