How do I move up a tier in incursions?

I have been in tier 4 in incursions for a long time and i wanna move up to tier 3?

Comments

get more five or four stars

It requires 16 4 stars and I have 18 but I'm still in tier 4

Probably wait for the 5 day timer to end

ive done sector seven and six for awhile but i havent progrssed much