I already open a ticket. But this has happened before. I use Mailgun only for Discourse and my mailgun account was disabled 3 times and re-opened. Maybe disable digest mails is the only solution for me.
My Mailgun account activated again. It sounds like I’m going to have the same problem again.
Thank you for answering our verification questions. Your account is now verified. I have move your account to a higher reputation IP. This should solve your deliverability issues to hotmail. Your sending volume is just fine and we have no issues handling your sending.
Please let us know if you have any further questions :).