Why isn't the legend lost sector showing up

Why is the legend Lost Sector not showing?

Access: Legend and Master Lost Sectors will not be visible to Guardians below 1750 Power (as of Lightfall/Season 20). Exotic Armor: ...

I'm level 1816 I did the legend lost sectors like 6 or 7 times. Went to the tower, came back and it wasn't showing up anymore. Can anyone tell ...

Your Warlock is too low power to see it and has yet to complete it on normal. Your Hunter is high enough power level, but has yet to complete it ...

If you meet both of those requirements and the Lost Sector still isn't showing then whatever source you're using to determine the active Lost ...

Hi there! In order to access the Legend or Master level Lost Sectors, you have to complete the normal one on each character. Lost Sector unlocks ...