I struggled with this a bit. What I got to work is:
https://abc.EpicorCloud.net/MySite/home/#/login?mode=mes
It also does use a regular license. Using the shortcut on my start menu (/DC) option, the client uses a data collection license.
Using https://abc.EpicorCloud.net/MySite/apps/MES gives me a limited MES screen but consumes no license.
Note: I’m on prem, not cloud.