Alt+F is the default Hotkey for FTL Follow Me, but that doesn't give the error you mentioned. That only happens if the Key Combination for the WoW Macro Action is changed to include a modifier thats also used by FTL

FTL Target Me by default has no Hotkey and the Key Combination defaults to ]. If you can tell me what's broken about it I might be able to help you fix it -- though I've never found a use for this key myself.