Fake purchase?

Hello,

I have very small wordpress page selling niche novelty mugs online. Today I received a purchase through woocommerce that failed, but I noticed the customer email address was a bunch of gibberish ending in @firemailbox.club. I thought of reaching out to the customer to let them know the transaction failed, but I'm suspecting this may have somehow been a spam submission. I wanted to see if anyone has had experience with similar issues.

Thanks!