Validations, feedback, comments and grades are visible in multiple ways in Pebble+.
The main way to view overall comments and keep track of everything that’s going on is via the What’s happening panel.
Find details and direct links to all feedback you’ve received. You’ll also be able to see details of any deadlines you have for work due.
Where you’re working with a workbook you’ll see who has validated any, including the date when something was marked.
If you’re using capability fields (red/amber/green rosettes) feedback will be shown in the sidebar. You’ll need to click to see it.