Hi,
I don't mind trying to help.
As far as I know, the G-Sight laser app will work with with any laser cartridge. However I must admit that I have only used G-Sight products, three different models in 2 different calibers, .45 and 9mm.
I have had to experiment with lighting, distance, zoom settings, and color of the target. I've had better luck with lighter targets, white or light gray. I have a red B-27 silhouette and the detection rate is very low. The targets that work the best for me are mostly white with circles or grids. Early in the thread you may have red that my "dot torture drill" target with the red circles was having issues.
I have a very dark B-8 center and other very black targets that don't detect well. I think the laser light gets sucked up into the darkness, or it doesn't reflect enough. You don't want the targets too shiny or too soft. There's a balance.
There is a sometimes a balance that you have to find between the phone (sensor) distance and the zoom setting in the app. Try moving the phone closer and using less zoom, and vice versa. Make sure the target fills the screen on the phone. I generally have my phone within two or three feet of the target. A tripod comes in handy.
Try a little less lighting, indirect lighting on the target. Shining a light directly on the target seems to interfere with detection. If the ambient light is too bright it can upset the detection.
Make sure the laser lens itself is free of obstructions, dust, lint, etc. Perhaps a q-tip and a can of compressed air can help.
Weak batteries can also cause detection issues.
For more info, here is the support page:
https://g-sight.com/pages/service
The FAQ page has suggestions:
https://www.gsightlaser.com/pages/faq-cartridge
Good luck!
Thank you for your indulgence,
BassCliff