Tapatalk is a constant pain for us, they are always changing the app and we have no control over the changes. Consequently if something stops working then there's absolutely nothing we can do about it because it's all out of our control due to it being a third party application.
There's two things I can think of:
1) Ensure you are logged in as you won't see attachments as a guest.
2) Double check in your Tapatalk settings that the "Save to" setting is set to "attachments" (without quotes). If you upgraded Tapatalk (or it updated itself) then it may have overwritten the entry. Thats a possibility as they did change their entry from "download" to "Tapatalk_download" at some point. Consequently it may have overwritten your entry.
Otherwise not much I can do or suggest I'm afraid.

Out of interest which topic is it that you can't see the images or is it all of them ?
At some point we probably drop Tapatalk altogether and revert to a responsive theme thats works on all devices automatically. We have one being built but it's very complicated so won't be ready for ages yet.
