A lens flare can only be applied to a raster layer. If the layer you have selected is anything other than a raster (ie. a vector shape, adjustment layer, blank layer, locked layer, etc) it won't be possible to apply a lens flare, so it will be greyed out. This might be the issue.
Simple and quick, love it.
Thank you! 😊
My lens flare is disabled. I could not click it at all. What should I do to make it able to use?
A lens flare can only be applied to a raster layer. If the layer you have selected is anything other than a raster (ie. a vector shape, adjustment layer, blank layer, locked layer, etc) it won't be possible to apply a lens flare, so it will be greyed out. This might be the issue.