Hello Community,
to clear all unconfirmed Transactions from your wallet start the wallet (aurumcoin-qt.exe - Versin Core 0.12.4.0) with parameter "-zapwallettxes=1"

use something like:
C:\AurumCoin\aurumcoin-qt.exe -datadir=C:\AurumCoin -conf=C:\AurumCoin\aurumcoin.conf -zapwallettxes=1

Backup your Wallet before use and use the command carefully to your wallet.
You will get back all unconfirmed AU to your Wallet.

Regards