Hello..
Now i only allow to send messages for other users if is registered and logged in, and today i have spam messages again... i have delta theme, and on the beginning when this theme was released i read there is a option to moderate the messages send to tge users...
So i realiza after installing the theme, that option is not available... so the only way to stop spam messages is, add a choice to moderate the messages send to advertisers or limit the number of messages send by hours to the advertisers. .
This is very important, and need to fight spam and bots, consider to add this changes...
Best regards
Joao carrolo