Problem with SSL

I’ll describe my situation. I apologize in advance, but I’m using a translator.

I’m creating a new website in Cyberpanel. When creating the main website, I click “create mail domain,” and after this I create a .send (for mailing) subdomain without this option (mail domain). Now, the problem is this: The main domain and subdomain .send have SSL through Let’s Encrypt, but the .mail subdomain doesn’t have SSL until I create a second website. When I create a new one, it automatically appears on the first website with previous date. What should I do to avoid having to create a second website?