Move portfoilio to new account

Ask your employer.  Adobe's contract is with the employer, not you.  You will need a PAID creative cloud plan of your own and employer's permission to move it.  Adobe Customer Care agents can't help you.  You need to contact Portfolio directly.

You need to go to the links below for Portfolio help
https://help.myportfolio.com/hc/en-us/requests/new?ticket_form_id=177168
https://helpx.adobe.com/creative-cloud/how-to/create-portfolio-website.html
https://help.myportfolio.com/hc/en-us/articles/216489627-Manually-configuring-a-custom-domain
https://help.myportfolio.com/hc/en-us
https://portfolio.adobe.com/themes
https://portfolio.adobe.com/

Let me move this to the Creative Clouds Services forum for you, where you are more likely to receive an answer to your question.

The Community Help forum is for help in using the Adobe Support Community forums, not for help with specific programs. Product questions should be posted in the associated product community.

To me this sounds like an account issue, and you will probably need to talk to customer service since account issues must be handled by Adobe employees.