Hi @poncebrianna ,

Try cleaning the gold contacts on the card with either a Q-Tip moistened with IPA (Isopropyl Alcohol) +90% or if you don't have any of that on hand, an ordinary pencil eraser will suffice. Do not rub too hard, just enough to ensure that the contacts are clean and bright.

Check if the card is detected when you insert it into a device. If it is not detected then unfortunately the card is faulty and needs to be replaced.