Hi Annie,
Thank you for taking the time to leave a review. I'm so sorry to hear about the lost flat back pieces! That's so frustrating.
As you know from experience, flat back studs do work very differently than traditional butterfly back earrings as the earring pin (the part with the bar on it) and the back hold together through a friction bond. This bond is created by a slight bend in the earring pin and is designed to be adjustable. So, if one of your flat backs was coming out too easily (they should require intentional effort to remove), then it's most likely that this just needed to be adjusted.
All of this information (and more) is included in the shipping insert and via QR code links with every flat back order as we want you to have all of the tools you'll need to fully enjoy your new flat backs.
We'd love to help you further! Please reach out to our customer service via the chat on our website or email hello@cordsclub.com
-Kellie with Cords Club
“I had a cartilage piercing that reacted badly to most earrings except a plain boring one I had. But there was no problem with these earrings, and they're so cute!”