A few things about mods.
Most cant be used when playing multiplayer due to an integrity check.
Updating DCS with mods installed can break mod or your install.
Older mods may no longer work wirh current version.
I f you updated with mod installed and now doesnt work try disabling mod, repair DCS, enable mod. If that doesnt work a cleanup then repair will remove any mods from install and repair. Then reinstall mod.