Yes, you would be able to merge your ShopBack accounts, reach out to us at firstname.lastname@example.org and we will be glad to help! We will transfer the Available Balance to your main account as a Bonus.
Do take note that ShopBack accounts with 'Cashback Pending' cannot be merged with another account.
All Cashback status must be confirmed and turned redeemable before accounts can be merged together.
Do reach via chat with us here to help you with it too!