Garmin coach - goal pace repeat

Hi.....workout two of my half marathon training. Goal pace repeats. So after my warmup the screen changed to cadence drills and a red arrow pointed to the lap button....on pressing it nothing happPray tone2. I couldn’t see my cadence or the 30 second times .... pressed it again and it paused and took me back to my watch pace. Persevered with 9 minutes and then abandoned the training session and justPray tone2! I was expected my watch (Fenix 5S) to communicate cadence v time v pace etc of each section..... help please Pray tone2