Hello Kapil
as for the email you received:
ok so you can log on to the trial account just one application (IoT MMS) is stopped and can be strarted manually by you in the hanatrial cockpit.
As this is a trial account this might happen (see above posted announcement thread).
In case you'd like to avoid this you need to "ugrade" to a paid account (i.e. that is not trial) , so in my opinion what you experience with trial is 'works as designed'.
Best Regards
Ervin