After yesterday’s update, I started receiving emails for each free download from my site. I used the Free Downloads plugin, which is up to date, during the last months and never got an email for the freebies that I offer – I have the send email to admin for the free download checkbox unchecked as you can see in this image https://i.imgur.com/zTOlxfN.jpg”
I think it’s just a coincidence, because the theme doesn’t control the email setting.
Maybe you can give a test, just change to the default theme, then download an item, and check if you still receive the email.
You can also contact the Free download add-on support for this issue.