If a mysterious charge shows up on your credit card from HOWL SSL CLOUD you will need to call your bank and cancel the card.
It does not matter if the charge is just $1 and if disappears within 24 hours.
The $1 to $5 charges are test charges to see what cards are valid and if they don’t get canceled the scammers assumes other charges will go unnoticed.
And the charges are going to come eventually ranging from $5 to hundreds of dollars at the time.
Also, the time between the first $1 charge and a subsequent charge can be months apart. So as soon as you notice any charge from HOWL SSL CLOUD call and cancel that card as it has been compromised.