Can Uphold be trusted?

Could you please elaborate on the trustworthiness of Uphold? Is it a reliable platform for cryptocurrency transactions? How secure are their systems? What measures does Uphold take to protect user funds and personal information? Have there been any reported incidents of fraud or security breaches? What kind of customer support does Uphold provide in case of issues or concerns? How transparent is their operation, and how do they handle disputes or complaints? In summary, what are the key factors that make Uphold trustworthy, or are there any reasons to be cautious?