Hi! Thank you for helping me! I hope you know I truly appreciate it.
My MSFS is from the MS Store and I installed the package content in c:\MSFS2020. Under there I have Community and the main package folder. Onestore I think (not at my PC).
My addon install was first installed in its default location under c:\Program Files. I uninstalled that completely (I cleared out appdata folders too bc the uninstalled missed it). I uninstalled the package bc I saw the double people. Then put a new install under c:\MSFSApps where I have other MSFS apps installed (like tree fix app).
I only have one HD, a 1Tb SSD. Specs are Intel 10th gen i7, 2080S, 32Gb RAM. Internet is 500Mb if you need it.