I get this message at the end of the colony invasion event. What does it mean? It doesn't seem to match the amount of fleet marks I earned. So, what are these tokens? Where are they in my inventory? What do I do with them?
I'll assume it's not some weird typo, since that mission seems quite polished.
The tokens are the fleet marks. Also, there will be a disparity if you do the mission during a bonus event. The AAR (the last box that tells you which objectives you finished) won't reflect bonus marks, just the base amount.
It's talking about FMs. The mission has more than one set of rewards given at different points. That's why your expected reward didn't match the actual reward. Example: killing the Mugato gives you 7 points immediately.