I would rather recommend you of using trusted trading app like binance or trust wallet.
Binance US will delist XRP on 01/13/2021.
Trust wallet only have 3 DEXs inside (Binance DEX, Uniswap atau Pancakeswap) make sure XRP has listed on these DEXs.
I don't know Uphold personally, it's the first time I hear that exchanges... But they still list XRP so you can trade there. I didn't find any ANN regarding Uphold delisted XRP, but they
may do same as other exchanges too since they can do whatever they want. IMO better to sell your XRP quickly before it will get delisted on all exchanges.