Storm Shield Defense Missions And Vbucks.

Hey. So I recently became a founder, allowing me access to vbucks in STW. I know that each Storm Shield Defense mission rewards you with 100 vbucks once completed.

Currently, I have completed all the storm shield defense missions part of the main storyline, plus the first one in Twine Peaks. I completed these before becoming a founder though, so vbucks was never given to me as part of my rewards.

I assume this means then that it is impossible for me to gain the vbucks from completing these storm shield defenses. Am I correct?