Because this game is Flash base game you have to do some things in order to "fix" some problems one of them is to clear your cache. cache is a mechanism for the temporary storage of web documents to increase performance if u delete them the browser u use will replace them with new ones most of the time it will fix the flash problems(not the server bugs)
If u need to clear your cache u can use this:
For the treasure hunt Npc u have to change your timezone u can use this
I heard that the auto attack in bf works if u change the timezone have to check it myself...