I too upgraded to version 2.8 – Same problem. Unable to edit or duplicate newsletters (no tools present).
I then downloaded and installed MailPoet 3. When I tried to activate it I got the following error:
“MailPoet plugin cannot run under Microsoft’s Internet Information Services (IIS) web server. We recommend that you use a web server powered by Apache or NGINX.”
Either way, I’m dead in the water. Anyone with 2.8 figured out how to get this to work yet?
