Add punctuation: Unsure about which type of PFX file you have Do you want to know exactly what it is who created it and how to open it
A: Unsure about which type of PFX file you have? Do you want to know exactly what it is, who created it, and how to open it?

Add punctuation: If the symptoms are better explained by another disease they cannot be labelled BDS The diagnosis is therefore exclusively made on the basis of the symptoms their complexity and duration
A: If the symptoms are better explained by another disease, they cannot be labelled BDS. The diagnosis is therefore exclusively made on the basis of the symptoms, their complexity and duration.

Add punctuation: It has a built QCPR training solution for a male performance and evaluate results key factors when one develops expertise
A:
It has a built QCPR training solution for a male performance and evaluate results; key factors when one develops expertise.