Unable to update stock status – accepted only instock and outofstock value

I have a big problem. I use several csv files but without stock management, in my csv files I have only stock status column. In the stock status column I have the following values for in stock items: Yes, Enough stock, Limited stock. And for the out of stock items I have the following values: No, No stock, 0, Not in stock.

Of course this csv files comes from my suppliers but unfortunately my suppliers can’t include in the csv files columns for stock management. And the plugin recognize on stock status column only the following values: instock and outofstock.

So the plugin don’t recognize in my csv files the values in the stock status column and therefore I can’t update my products stock status.