Can't send monero

Hello, when I want to send monero there is a error msg " NetworkError when attempting to fetch resource."

I have write correctly monero adress but waves client tell me a payment ID. I have “secret view key” and “secret spend key”, wich choose ?

Edit: When I send monero, It’s write " fee waves" and " fee emoticon "
what is this emoticon ? coin ? scam coin ?