Authentic Yeezy 750 Glue Stain Factory Defect

After deciding to sell my Yeezy 750's through StockX, they would not authenticate my pair on account of a glue stain on the toebox. To keep it short, simply looking for advice on possible fixes (without wrecking the suede) and/or other options of sale. Also some opinions on if such a defect actually affects the market value of the 750's. Years of complaining about Nike quality then Adidas does me like this

Picture is directly from a conversation with a StockX rep.

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