Since I'm a Volunteer at the Superstition Mountain Museum, I get to attend these special events at no cost. All of my photos are then edited and donated to the Museum for their usage.

This event was a fundraiser for the non-profit Museum and featured a Mariachi Band, playing instruments and singing. The day was cloudy and threatening, but rain was not in the forecast (yeah sure). The attendees were eating the prepared meal and snapping shots with their cellphone cameras, as I wandered around shooting the band and the scenery.

During the meal, a rainbow appeared, very light at first but quickly intensifying as it moved above Superstition Mountain in the background.

1) I kept snapping shots and managed to capture the one posted here, with the band still playing and oblivious to what was going on behind them.

2) The second shot was taken as the rainbow was fading and appears to have its base on the ridgeline, just a short distance from where I was standing (no, I wasn't able to locate the pot of gold).

3) The final shot was taken as the rainbow was behind the Wickiups (Apache Village) and above the Mountain in the background.

And then, as a finale, the rains began. Everyone quickly ran for the coverage of the roof-covered patio where the band re-assembled and continued playing.

Jack Olson's Images in the Wilderness

Actually, both DxO PhotoLab and DxO's version of the Nik Collection are very reliable and have tens of thousands of users.

I cannot say what issues the person you are replying to had and why they were not resolved, nor do we know which software he was using and which version, but I have been a DxO software beta tester for the last five years, and the majority of reported compatibility issues are not directly attributable to problems with DxO's software.

In your situation you seem confused about which DxO software and version you actually have a license for, and which software you actually tried to use as a plugin with Lightroom. DXO PhotoLab 7 Elite is a competitor of Lightroom and is not a Lightroom plugin. The Nik Collection 6 can be used as plugins with Lightroom classic. Until you can be a little clearer with a greater understanding of what you have it is difficult to help you.