[Plugin: MailPress] roles and capabilities

Making a newsletter/mailing and sending it, is no problem. However the receiver cannot read the content of the mailing. Only the template and title are readable. Somehow, I think this has somthing to do with roles and capabilities, but i am not sure.

Can someone help me with this?

Thanks,

André

https://www.ads-software.com/extend/plugins/mailpress/