Inconsistent

Ive always had problems with checking in with United. Isnt the app tho, its just United. Same problem from a browser on the PC (any PC). Dont seem to have that problem with other airlines. Also have a problem with storing my traveller info on their site. Doesnt give errors, but wont save changes. They apologized, but offered no help or explanation!

Golden Jet 50 about United Airlines, v2.0.20