i checked your config, everything is ok except for FTL assist

it seems isboxer or you disabled the "use Wow FTL modifers", you need that to be "ON" for FTL assist to work.

to enable it, do this

1- "load configuration in isboxer (if you do not have it in isboxer)
2- go to "key maps" and click on "general" keymap
3- click on "FTL assist me" and to the right, where it says "use wow FTL modifers" set that to "ON"

then reload UI (/console reloadui) on all active Wow windows.
turn "off" "repeater" and turn "on" "keymaps"

this should allow the FTL dps keys to work