Clarification on Bluehost's Updated Hosting Practices

A few years ago, I purchased a shared hosting plan from Bluehost and migrated all of my domains from another provider. These domains are low-traffic, mostly serving basic web pages and handling email. At the time, the plan offered unlimited domains and email accounts.

However, I recently purchased two new domains and discovered that I can’t add a web page or create an email account for these new domains without upgrading to an additional plan. It seems the original plan no longer applies.

Could you confirm if this is indeed the case? When did Bluehost make this change, and is there any way around it, or do I need to purchase an additional plan for each new domain?