[Solved] Challenges: Lavish Luxuries, Golden Oil - do not do it in Blight tab

... as it does not recognise upgrading three Silver Oils to Golden Oil in the Blight tab.

Did /recheck_achievements and even restarted client.

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Solved: I need reading comprehension + 1. Challenge is to use the currency, not to use it in a vendor recipe. My bad. Sorry.