I hope that you are doing well! 

After considering the issues at hand, an idea came up to not let users create an account until they have purchased their Whitebox. This would remove the complexities of linking pre-existing accounts to new accounts. When signing in on the Whitebox app, the account could link to the Whitebox itself once successfully signed in.

Just some thoughts, please let me know what you think.

Kind regards

Tristan
--