Is that what you're referring to by double checking?
Yup. If you view your target spread in the main window of RNG Reporter, with the correct ID/SID combination, it should be shown as shiny, with the !!! mark. If no !!! appears, then something went wrong in the process of abusing your ID/SID combination, sadly :(
I originally generated the ID/SID by pasting the seed into the Shiny PID section of Pandora's Box
You might have generated your ID/SID using the target Seed, instead of the target PID.
Can you share your ID/SID combination, target spread and seed?