New European users (signed up after February 1st 2022) can’t hold balances in national currencies such as EUR.
The easiest way to keep value on the platform in a stable form is to buy stablecoins. We support USDC, USDT, UPUSD and UPEUR. The first three are pegged to the US Dollar. The last to the Euro. All are crypto assets backed by the equivalent underlying fiat currency. This should mean that the stablecoin tracks the value of the underlying currency almost precisely.
We plan to introduce Fiat currencies later in the year.