"Add to watchlist" not showing on some listings in the app from a seller

Hi Paul. Can you give me an example listing number? (Ten digits starting with 5) I'll check it out. 

This one #5432982087 and others from the same seller.

Hi Paul. Wow. Maybe I should have kept my weetbix cards. Anyway, that's all working fine for me. Can add to watchlist.  (iOs app) 

Can't speak for android, but if you are still having issues make sure you have updated to the latest version. 

The app is up to date.  I have an android phone, also up to date, but I don't see how the problem could be with android or the app since I have been able to add listings from other sellers to my wants list, just not the one selling weetbix cards.

This item has been created on the "new look" Trade Me, so it's no doubt where the problem lies. Unless someone else comes along to confirm the fault on Android there is probably not a lot you can do except contact Trade Me directly to inform them of the issue. 

I can add it to my watch list using andriod.

Kia ora Paul, sorry for the confusion on this, if you've checked that your version of the app is up to date, also try deleting the app and reinstalling it, sometimes that will do the trick.