How to make plane as attachment

[ies]

I have model which is just plane, I got it to display as unit but I need to attach it overhead so it has to be called as special effect. When I do so, it doesn't display in game. It tracks camera, maybe it's in wrong axis? I'm pretty bad with this stuff.
Posting the model, can somebody point me in the correct direction?

Worst case I'd have to stick with units and move it periodically.