The ring won't open. Whether you try to open while on your finger or whether you take the ring off and attempt to open, it's impossible. Maybe carry a butterknife around with you as well so you can pry the clasp loose. If you request a return, they require you to send a video of you attempting to open it to prove that indeed you can't open it.
Claim your business profile now and gain access to all features and respond to customer reviews.