TSP contributions were never matched. ETS was 3 years ago.

As the title says, I got out of the Army in 2021. This year I looked at my TSP account for the first time ever. I was contributing 5% in ROTH and Traditional since as early as possible when I joined in 2017.

Earlier today, I looked at some old LES forms and noticed the two "AGCY-MATCH" blocks have had big fat zeros for the last four years. Through some googling I found other posts where people claimed they got back payed direct deposits into their TSP accounts after hashing it out with finance. However I feel pretty lost as I am no longer in the Army.

What is my correct course of action with this situation?

My current plan is to call DFAS and maybe my unit's S1 but if anyone has a more streamlined and definitive answer that would be fantastic.

I appreciate any advice given. Sorry if I don't reply quickly, my classes have me pretty tied up.