I just bought this corn plant from Costco a few days ago. Some of the leaves had some dark edges (not crispy though) and also some dark spots edged in yellow. I thought maybe it was due to transporting from the nursery and in my car, but now I’m worried it could be a fungus. I used planta diagnose app and said it was just maybe overwatering (I have not watered yet). Can anyone tell me if I have a fungus problem? If it is fungus I want to return or try to cut off the affected leaves right away.