Fast formula - Family Member Determination - hides ineligible contacts but don't hide corresponding

Summary

Fast formula hides the ineligible contact but show the option for the wrong number of contacts

Content

We have a plan with several options that should only appear according the number of eligible contacts. Is saying that he has 2 eligible contacts should only appear the option for 2. Today it hides the contacts that are not eligible but shows the option for all contacts, because he has a third one that is not eligible the option for three appears and should't. 

So the formula is working contact related but not working for the option. 

Can you guys please advise? 

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