After signing up, you may see a $1 pending charge on your bank statement as part of the card authorization process. This is a temporary authorization charge and it will disappear from your statement. The actual first payment for your account will not be charged until the end of your trial.
This is a common practice for subscription services that offer a free trial, confirming that the card provided is valid. Our payment provider may send a request to the issuing bank for either a $0 or a $1 authorization to verify the card and the bank will allow it to be authorized. The charge is not an actual payment and it will not be deducted from your account.