@RevivalGypsy I believe Android is not able to use 11 photos option yet. you may want to contact customer care to see if they can give you an update when they will be adding this feature to Android devices. 😎🇬🇧🔚
You can also contact customer care through Twitter at OfferUp if this option is available to you.
I agree. O just found this answer to question I too posted, wanting to post at least 7 photos, not 5, on a special item I'm selling. Y'all's posts we're helpful. Thank you. I cannot bc I'm on a Motorola Z3 Android. #sad