Fire TV Game Circle Invalid API Key - API key shows different within GameCenter and within Security Management - I get excpetion in code

I am putting GameCircle in my Fire TV app - however when I go to run the app I get an: IllegalArgumentException: Invalid API Key

Failed to decode: decoding fails: certificate fingerprint can't be verified! Unable to read api key. GameCircle requires an api key to be included in assets/api_key.txt. GameCircle will not initlize

The thing is - I have an api key that I have placed there, so why is this happening?

I have verified my looks correct

in the developer console under security profile it says Game is associated with com.c4.pc security profile everything looks correct, under the Android Settings tab the API Key Name, package and signature all look correct (I have verified the signature with multiple online MD5 generators with my keystore file.

When I go under GameCircle and look at my API Keys and click 'Obtain API Key' it has the same key name, package name and signature

BUT THE API KEY IS DIFFERENT!

Shouldn't they be the same?