Hellisan, it sounds like you're saying 48/50 means you have 2 subs left. 48/50 means that you have 48 remaining.
This is my current subs setup in week 11. 6/50 means that I've made 44 subs and have 6 remaining. You can see that CB Griffin is subbed in @ WR on my kick coverage team.
Even though it's week 11 I'm still able to reset my subs with no issues Deegeezy.
I reset them (see how my WR Derrik is back on kick coverage) and I now have all 50 subs left.
I make 1 sub (Deion McDoooooooooooooooooooom) and I now have 49 subs available.
Is this not the behavior you two are seeing?