Ethereum (ETH) was previously available to use as Primary or Supported currency but it is no longer supported by Fixer.io, the third party service used by Lunch Money to obtain historic currency exchange rates.

ETH is still listed and can be selected, but it fails to retrieve the exchange rate and displays an error. ETH should be removed from the list of Primary/Supported currencies, but kept to maintain historical values.

Note: ETH is still supported when adding manually-managed cryptocurrency accounts, as that doesn't use Fixer.io