If you downloaded the update from Google play, just go to the settings....General....Application manager.... Downloads and look for tapatalk. Once you find it click on it and hit the button that says uninstall. This will get rid of the update and bring you back to the original version that you initially downloaded.
Do you have the free or the paid version ? What I would do to see if it helps is to uninstall it completely ....reboot and download it again to see if it helps.... One stupid question just in case: are you logged into tapatalk ? or just in the individual forums ?
I thought it was just me. After the update, I can't upload directly from the app. I have to use a link like photobucket. Also, I noticed not all images are shown when I review threads.