Did they get paid 2M in USD, or did they get paid 2M in magic-bean tokens, where is so little market depth that selling 30k of it would tank the market, so they will have to bleed it out slowly and hope the price doesn't tank before they exit
"Payouts are handled by the Sei Foundation team directly and are denominated in USD. However, payments are done in SEI." [1]
The other part of my comment is correct according to the various Immunefi listings. Again, I could be incorrect if they do something differently behind closed doors.
But OP was paid in USD anyway.