Hi Adomirak,
Could you please try following our new troubleshooting steps listed here: Troubleshooting Steps for Missing Characters on the WoW Forums - #3.
While this post highlights issues generally found here on the forums, the same steps could resolve issues found on the Character Profiles on worldofwarcraft.com.
During the pre-patch release we did need to briefly disabled Character Profile updates on the web, so if you last logged out of character during that time it is possible that their data was not updated on the website(s).
If the steps above do not resolve your issue, please do let us know with specific details pertaining to which characters are affected so that we can more closely investigate. Thank you.