Dear Valued Customer,
Thank you for reaching out. And sorry for the inconvenience caused. Please feel reassured as we will try our best to help you and fix your case as soon as possible. According to the problem you met, could you please try the following solutions?
1. Please try to factory reset the keyboard by long press FN+ESC or restore the keyboard via driver to see if the key will resume work.
2. Please try the wireless mode to check if the same thing happens.
If the problem still exists, could you please kindly send us the video about the issue, along with your order number to our support team via support@epomaker.com?
Please don't worry, our member will help you.
We feel so sorry again if it causes any inconvenience brought to you.
Wish you a wonderful day!
Kind Regards,
Epomaker Customer Service Team