[Mod Help] Any new mods I make no longer appear in SimplePlanes. 4.5 years ago

After exporting my finished mod and starting up SP in the mod list I do not see any new mods that have been exported. yet they are in the mod folder.
Unity version 5.3.1f1. personnel
SP version 1.3.4
https://19216801.onl/ https://routerlogin.uno/ https://192168ll.link/