If you want to merge several accounts into one general account, follow the steps below:
1) Go to https://mobilevikings.be/en/ and log in with the account you no longer want to use.
2) Go to ‘Settings’ > 'SIM settings'.
3) Go to 'Manage Authorizations' and select 'Edit this'.
4) Enter the email address of the account for which you are transferring the SIM card.
5) Select both options.
6) Enter the password for the account you are currently logged into.
7) Click on 'Authorize'.
Your number is now transferred to the other account.