Please check whether the item you exchanged appears in [Menu] > [Owned Items].
Also, on the confirmation screens for "Players," "Support Cards," "Workout Gear," "Advisors," and similar items, the "Filter" feature may be affecting the display, or the item may have been converted into "Pieces" due to a duplicate acquisition.
■Resetting Your Display Settings
On the confirmation screens for "Players," "Support Cards," "Workout Gear," and "Advisors," if the Filter feature is turned ON, the item you're looking for may not be displayed. Please select "Restore Defaults" to turn the setting OFF, then check your owned items again.
■About Automatic Conversion for Duplicate Acquisitions
If you obtain a "Player" or "Support Card" you already own, it is automatically converted into the corresponding "Pieces." Once you have collected a certain number of Pieces, you will be able to "Enhance" the corresponding Player or Support Card.
If the issue is not resolved, please contact us here.