See https://support.sonos.com/en-gb/article/connect-sonos-to-a-new-router-or-wi-fi-network

Thanks for your response but is useless..... I already searched the sonos site for help... It's like when you ask a  highly trained specialist for help with your pc and he tells you to restart it.…

Thanks anyway...

You should call support rather than asking other users for help, we are not highly trained or specialists.

I sure don’t want to disappoint you by posting another link that you have already seen so please ignore this as I’m only doing it for other folks that might see this topic.

https://support.sonos.com/en-us/article/supported-wifi-modes-and-security-standards-for-sonos-products