Outgoing disabled

Outgoing disabled

Hello,
two users under the domain tururu.cat (comandes<at>tururu<dot>cat) and (info<at>tururu<dot>cat) can't send emails due to a spamer/virus on our computer (it was trying to send emails constantly). The accounts were  disabled for  outgoing. I'm now sure the computer is ok but I can't enable these accounts again.
Operation permitted for paid user(s) only

Can we re-enable it again. Both accounts are important for us.

Thank you!