In order to help you communicate with your affiliates team effectively, you can enable the in-app chat feature, which helps you to send direct messages to your affiliate within the app.
In-app chat can be enabled on Setting => General => Chat with affiliates, then click On:
After that, you can find the Chat icon on the top menu:
When clicking the icon, a popup will be shown with a list of your affiliates, you can select/search the affiliate and enter the message:
On the affiliate account, they will see the chat icon on the bottom right of the screen:
Once you/your affiliate gets a message from the other, you/your member will be notified within the account.