1. got the pro version and i cant now send messages to the users. I always have this error: “You must enter a valid recipient.” how to solve this. if there is a code I have to insert it, please tell me where I should add it. thanks
1. It means your recipient is invalid. Are you sending default send message page or any custom coded one? Are you using any custom code to set user?
2. see CONTENT in that code. Add your own text instead of CONTENT
3. Please check if you set Content Type as HTML in Front End PM PRO > Settings > Emails