Unable to Claim completed Milestone "EL-16HFE Training Session"

*BUG FIXED*

@coluianI'm sure you figured this out since 2018 but I've just started playing this game and it's crazy that this is still an issue as it just happened to me. I figured out how to fix this for me by just opening crates. It turns out that after I unlocked the mods they had them as crates to be opened. I just now opened them and the mods are now able to be used.