I may have found the reason for this. It caused by cache, you would see the pictures after you clear app data. Clearing the Tapatalk cache and data (settings->apps>tapatalk->clear cache and clear data). Also, you may have no problem viewing the images after you log into the forum. Have you got the latest version of tapatalk? If not, then you should try to update your app. Sometimes, post creators are those who cause the issue. They try to update or change (or something like that) their images and the only thing they manage to do is to make them disappear. They will likely have to re-upload all the missing ones themselves. If you have deleted ecf from tapatalk, then you added "EC Forum" a few months back, then do not auto login, type it manually.