A price change didn't reach Airbnb or Booking.com. Check that the override covered the right listings and rate plans and the right Applied Days. Unticked weekdays aren't changed. Then check the channel connection under Channels.
Some days are closed and I don't know why. Switch the Cockpit display to Stop Sell, Closed To Arrival or Min Stay to see which restriction is set. Also check the property's Cut off time and Max Days Advance (see Property).
I lowered a price, but it stays the same. The price is probably below the property's Min Price. Elev8 doesn't apply prices under Min Price: it's a safety net against selling a night far too cheap by mistake, not a bug. Lower Min Price under Property → Property Settings, then set the price again.
I can't find minimum stay under Availability. The Availability tab only sets how many units are for sale. Minimum stay is a restriction: set it on the Restrictions tab of Override Settings, and check it with the Min Stay display.
PriceLabs says the listing "is not available within the next 366 days, or no starting prices are set". The message is accurate. PriceLabs needs a full year of calendar and a starting price. Set Inventory Days to at least 366 (500 is a good default, 730 the maximum) under Property Settings, put a price on the room's default rate plan under Rooms & Rates → Rates, make sure the dates aren't blocked in the Cockpit, then let PriceLabs pull the listing again. Every new listing needs these two things before PriceLabs will accept it.