I have two prime codes and neither are working on Nintendo Switch.
This looks like an account issue, if you still require assistance please ask other forum users in the Ask the Community sub section as we do not offer technical support on this forum. https://www.bhvr.com/contact-us-2/
Did you reddem a code already? If so you can't stack them.
No, I got one from my friend and one from her daughter. Neither play dbd. I only wanted to use one and give the second to my best friend, but Neither are working.