Lost buybox on my own private label listing

I am the only one selling, have the lowest price, am FBA, and am eligible for the Featured Offer...BUt I dont have the Featured Offer.. It says "price higher then typically" and doesn't show me on the buybox

I have had the featured offer since i listed my item 1 month ago, but last week lost thy buybox. This doesn't make sense to me, and seller support also doesn't know why I don't have the featured offer.

Note1 -- other sellers selling similar products are at the same price range.

Note 2 -- I accidentally lowered my price 2 weeks ago from 119.99 to 45.99 (by mistake instead of 145.99) and sold 2 items under the new low mistake price until I noticed it... And can't continue selling at 45.99 at it's way below my own cost. Yes stupid rookie mistake

Note 3 - i subscired to 30 free units for Vine.... which dramatically lowered my average price per unit on SKU stats... well below my cost... so now im showing very low average sell per unit .... could this cause the low price adjustment requirment by amazon ?

Is there any chance of resolving this?

Opened cases with support.... Called few times... Keep getting same rubber stamp answer about this being automated and no one can help me..

If there's Anyone that knows of a fix... Please share.