Saint is aware of this and PM'd that he would try to fix tapatalk this weekend using an update linked
here by Hoopz.

For more background details, see the numerous threads on this subject in the "Forum Discussion" sub-forum. (many linked in the thread above)
TL;DR version:
* tapatalk stopped playing well with SMF after an update
* tapatalk
claimed to post fixes but lots of SMF forums still had problems
* SMF removed tapatalk as an officially supported plugin
* some admins of other forums recently implied on the SMF forums that at least one of the newer update versions is working for them but haven't found solid confirmation/details on that yet

Bottom line: Don't hold your breath waiting for this to be resolved.
Scott