Can I have more than one customer account?

Both the Plugin Subscription and the Astute Manager Pro Subscription require only one account, this account is then usable on 2 computers owned by you.

If you are a business with multiple employees requiring access to our software, you can purchase through our Team Licensing systems which allow you to purchase and manage multiple licenses from one account.

Further reading:
Plugin Teams
Astute Manager Pro Teams
What is the difference between an Astute Manager Pro subscription and a Plugin subscription?