Another iphone forever/yearly upgrade question

preview.redd.it/y25bhap1uhvh1.png Can't figure out what I am "missing" here or doing wrong but my wife last used the yearly iphone promo for the iphone 16 (skipped last year) but when i go on the website and try to do a trade-in on the new 18 it tells me it will only give me $380 off On magenta max and the phone is fully paid off Can I not do it online or did they nerf this promo (still shows up in the line add-ins) preview.redd.it/sw34nf43thvh1.png