If you followed the guide, then when you click on the clickbar buttons it should be doing 2 things.
1. Telling your healer to select one of your characters (by sending one of the F1, F2, F3, etc keys). - In fact it should do this when you move the mouse over the buttons.
2. Telling your healer to perform an action, which will be the one oh the in game bind for whatever you have put in the Simple Heal 1 or Simple Heal 2 mapped keys.
So if your healer does absolutely nothing, you've missed a step somewhere. If you healer does the party member select, then the in game bind for the heal may not be set, the skill on that in game bind is not what you think it (or not active), or the game may not like the in game bind you are trying to use if you have modifiers. This last depends on the game, as some games require different settings for binds with modifiers.
So, if nothing happens,
share your profile.
If the targeting happens, look for what you missed, and if you cant spot it,
share your profile.