On the paper pass it is clearly with name+birth date + NR of ID on the upper right hand corner of the printed ticket on very special anti-fraud railwaypaper. Note that it MAY differ from country of ID, if you also have official documented proof that you live somewhere else.

Have not yet used mobile pass-so others will know more

Thanks. It’s a mobile pass. 
I am confused if I should download and activate the pass now or wait until I’m about to travel…?

The advice is not to activate your pass until you are sure what your start date will be, because if you activate now, then later decide to postpone and forget to deactivate, then you loose one or more travel days.

You could already test if the activation works but I'd deactivate then again.