Luna unit frame healer problem

[TheeClark 0]

Hi guys I am very stressed about a small issue I am hoping someone can help me fix it . I am a healer but if for example if myself a party or raid member take damage our hp bar does not depleet , sure I get the numbers how much they are - or over healer but the actual health bar does not deplete and it’s driving me crazy , if anyone has some info it would be appreciated , thanks in advance 

[AgentArthur 0]

In the Luna menu, on the General tab try moving the Background alpha slider all the way to the left. I was playing with my settings and left it on the right by accident because you can't see what it does when you're full health/mana, and that made my health and mana bars not appear to change on damage/casting.