Hi,
I’m not the expert here, but I’v read that you will also have to wait the time set (91day) when you turned off the auto stake.
“When you stake, you have the option to ‘auto-stake.’ If you do, you receive extra weight so it’s as if you’re staking way more than you have. When you have selected this, you need to turn off auto-stake first. Then it makes you wait the amount of days you selected in order to be able to withdraw. You wait those days from that point and you can withdraw.”
see also: link