Hopefully we will have webtool updated later today or within the coming days.
Make sure it says Version 1.26. May have to close all browser windows and try again if it keeps saying 1.24 or 1.25. 1.26 checks to see if PB is enabled.
A GUI RCON app with PB support is released and I've added a guide:
NOTE: If streaming does not work, verify PB is enabled by entering this in rcon:
It should return true, of it returns false send vars.punkBuster true