To reset all FCT CVars:
Here are some common issues that players may encounter when trying to enable damage numbers in WoW: how to enable damage numbers in wow
There is a hidden CVar (Console Variable) that overrides everything: To reset all FCT CVars: Here are some
The native system works, but it is ugly and limited. If you want floating text that looks like Diablo or a JRPG, you need an AddOn. Here are the three kings of damage text. how to enable damage numbers in wow