Thank you! This helped me get to the right place, although the route was slightly different. (Because it wouldn’t be Disney IT if it wasn’t a little different for everyone

.)
I’m posting my route in case it helps anyone.
Per your advice:
Hover over "My Disney Experience"
When the menu drops down, click "Disney Park Pass System"
At this point, I do NOT have an “Annual Pass” button, but I CAN click on “Make A Park Reservation”.
Then I can click on “Annual Passholder Reservation System”
Which takes me to the page with all my existing park reservations, as you described.