Can I upload my digital book to Kindle Unlimited if it's on my website, too?

Hey all, I’ve been scrolling today and discovered a small chapbook of poetry I have can be enrolled in the Kindle Unlimited program (my designer made me an epub of the file).

Thing is, I’m currently selling it on my website—both the digital/PDF version and the ebook.

Can I have it in both places? I went to the Kindle Unlimited site and the Kindle Select info is clear as mud….

Link to my books page for reference. https://jodyleecollins.com/product/emmanuel-poems-verses-for-the-holidays-digital-version/

Thank you!