Is there is any global problem with Service Desk + Cloud? 

I already checked portal with all status and it looks like everything is fine.

Link: https://status.manageengine.eu/#/components/3fJbAAzWi8AT6i5Xo6qbIAWPJTTlcqbwRL6k1I3_szqHBKl6VtFQ4WwgzyaMwgPH

Im pretty sure that is not our internal problem with Internet connection or any e-mail issue.