If you forgot your Blizzard account email, you can use your phone number to find your account.Transfer Game to Another Blizzard Account
How to move a game account to a different Blizzard accountMerge Game Accounts
It is not possible to merge the progress of two or more games into one.
Boku paument error informationI Received the Error: Payment Error - Oops! This Needs Your Attention
Troubleshooting steps for payment error: Oops! This needs your attention.How Long Does an ELV / Direct Debit Payment Take?
Information about the processing time for ELV/Direct Debit/Sepa payments.