Currently XDC is listed as a Tier 4 asset on uphold, meaning that you can buy and sell XDC on Uphold but you cannot deposit XDC to your Uphold account or withdraw XDC from you Uphold account. You can't access an XDC address through your Uphold account, so I don't know how you got an XDC address at Uphold to send your transaction to. Can you post the transaction hash for your transaction?
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Currently XDC is listed as a Tier 4 asset on uphold, meaning that you can buy and sell XDC on Uphold but you cannot deposit XDC to your Uphold account or withdraw XDC from you Uphold account. You can't access an XDC address through your Uphold account, so I don't know how you got an XDC address at Uphold to send your transaction to. Can you post the transaction hash for your transaction?