Sorry., but finally I am dumb. App is working perfectly, it was my new Galaxy Round or actually me - the one who while unpacking new stuff always throws away the Manual with a box :) I touched the sensor by mistake and activated settings. I LOVE DELIVERIES SO MUCH, THANK YOU!
THE ONLY THING, if possible, which would be good for everybody is to add a personal list of providers above rest of providers so we do not have to scroll "forever".. USPS for example is looong way down.. Such a option would enable me to add tracking much faster what's important when I have 10-15 "adds" in one go. Personal or some auto most frequent list would be really great.