Hi @naughty-cat,
Thanks for reaching out and welcome to Netlify’s Support forums!
I see one successful submission made about 30 minutes ago. Seems it may have been from this deploy: Netlify App as I was able to make a successful test submission here: https://65a97be02085050008dc1805--eddie-traylor.netlify.app/
Have you seen our Support Guide here:
Specifically we recommend reviewing this section here: [Support Guide] Form problems, form debugging, 404 when submitting - Support / Support Guides - Netlify Support Forums of the above linked guide to see if that helps you get form submissions working.