This happens if you tried to set it up twice or didn't finish a previous setup. You will need to contact Customer Support to clear the "stuck" serial number from their database.
is technically discontinued and no longer supported by EA, it still functions for users who already have it installed. However, EA now officially recommends using third-party authenticator apps Google Authenticator Microsoft Authenticator for all new setups. Current Status of the Security Key Official App Status: swtor security key app work
A: Yes. If you have an Apple Watch or Wear OS watch that supports standalone authenticator apps, you can install Google Authenticator on the watch and sync it. It works perfectly. This happens if you tried to set it