Nothing changed on the forum end of the software. However, Tapatalk has changed the design and architecture of its phone software twice in the past few months.
You need to look for the "Timeline" link on the iPhone software, to show all posts how they have been made starting with the most recent post at the top of the screen. It's little icon is shaped like a clock.
Alternately, you can use the "New posts" link, which is shaped like a dot sending out radio waves.
I don't like the redesign, particularly the latest one, which in my opinion makes it much more difficult to navigate around the forum. Very annoying, but nothing I can do anything about..... All I do is have their "back end" software installed so that it can present the existing forum information appropriately to the mobile (phone/tablet) software on the Apple, Android or Microsoft mobile devices.
Cheers,
Gerry