As part of the card verification process, when you link your credit/debit card to your Cashrewards Wallet, a temporary pre-authorisation value shows on your card statement with the reference VERIFY AUTH. 

The pre-authorisation amount is a temporary hold of funds, it is not charge.  When the verification is complete, the pre-authorisation amount showing on your card will be cancelled.  If the card remains in an unverified state, the temporary hold will be released after approximately 10 days.