The nightmare continues....lighting

[Lionessa]

2. Installing lights is generally pretty easy. If you're having this much trouble with Lowes,

I recommend trying somewhere else. I use HD and nary had a defective lamp, light, or ceiling fan and I bought many over the years.

You might check that the wire nuts are properly screwed onto both wires, sometimes when screwing them on, one wire will wiggle lose rather than screw in, check all wire nut connections.

Otherwise, yeah, get an electrician, but still someone has to provide a fixture that works for installation to be successful.