I'm getting the same on Android. Also, when I go to My Trips on the website, it's incredibly slow to load. Beta site is faster, but I get errors sometimes when clicking on the trip itself:
Bad Request - Request Too Long
HTTP Error 400. The size of the request headers is too long.
Something is completely jacked. I have several itineraries like you as well. So not sure if it's one itin that's doing it, or they have some issue with too many itins (which would be a new problem).
I didn't bother re-adding them all to the phone, just my next couple. I'm hoping they fix this globally first.
I had reservations put a ticket into IT...you may want to do the same to add pressure on this.