I just installed the version 2.0 but I am not managing to use the mailgun… I created the service but this version no longer appears the option to select it with default shipping method…
I solved the problem by creating an SMTP service with mailgun confs and not using the service mailgun option
http://monosnapmauro.s3.amazonaws.com/monosnapmauro/DreamFactory_2015-09-21_22-08-14.png