All users may only have one pubby account. This is to make sure no users accidentally break Amazon's review policies.
If the team has requested that you merge accounts, please let them know about all the emails you've created pubby accounts with, and which of these you'd like to use exclusively moving forward.
All books and activity will be merged together into the main account.
Please then send permission from each account for the merge. You can do this via Ticket, email (support@pubby.co), or chat.
Here is a template to help you.
"Hi. I give my permission for the merge into mainaccount@email.com."