Microsoft survey branching

Branching issues here, I have 6 questions, i branched Q4 to a sub question Q4a,  the issue is that 5 and 6 is hidden and only shows when 4a is open, i want 5 and 6 to be showing regardless of the branching in 4.
 I have already tried the expected fix with the "Go To" as below

Q4   Option A → Q4a → Q5

        Option B/C → Q5
Q5 → Q6 (normal flow)

But still not working, the form just stops at Q4 and only opens with options are selected showing Q4a , 5  and 6
How do i fix this?