Still bummed that Deliveries got discontinued. The FedEx app is truly awful. UPS is less worse but still pretty janky.
I do know there are alternatives (like https://parcelapp.net) and to be honest I haven't looked at any of them. I'm sure some are OK/usable, I'm just bummed because I hate change.
Parcel - Delivery Tracking for iPhone, iPad and Mac

The best delivery tracking app available for iOS and macOS.

@paul I was a Deliveries fan as well, ended up switching to Parcel and it has been a reliable replacement. Painless switch but I totally get it.
@o22ie does Parcel actually update fedex items?
@galonsky Sure does. Has a nice little auto populate integration with Amazon orders as well.