http://freebtcglcw7bnv6uw6zuf5c3nip77k3cmoxemfjmnoiqlnrjuux4rad.onion/instructions
Once created the account, click the "+ Add Wallet" button. Choose "Import" tab, then find required currency in the list and enter the private key. Then click the "Add wallet" button. After that you will see the imported wallet in the wallet list. Electrum and Electrum-LTC .