I just created a new dummy user in my Office 365 E3-Plan. Playing with this user in OneNote showed at the second time, I launched One Note in the browser the following what's new notification screen.
The word ihre should be capitalized and therefore be Ihre.
Also, just as a note, you are talking in the second section about Schüler, which in German means students at school and targets this group specifically. If it is intentional (I don't know the English original), all ok. If not, I would like to suggest to review.