How to change the wifi key?

Sorry, my bad.

It’s ok now, he’s connected to the wifi.

But I do not understand why I could not do directly on OSMC ?!

Thanks !

Might be some special characters in your passphrase that gave problems

Actually just saw I forgot the closing > which would explain the confusion. Just edited my post and added it for the future

No, passphrase are normal. I tried 12345678 and it did not work.