It’s because you must have had the App version open at some point and that has been cached as a preference (seems AW prefers app for reason).I got around it by closing the UKP tab on my browser (IOS Safari) and re-opening a new UKP tab. This may not work for you though unless like me, you browse in “private mode”. If you do, this should work. If you don’t then you will need to delete your browser cache/ cookies etc. You can do this from the Advanced setting in Settings- Safari- Advanced and then searching for Adultwork and deleting the necessary cached files/cookies.
Thank you I recall doing this before but couldn’t remember how thanks again