I am trying to link my Codemagic account to Apple with "Apple Developer Portal integration". I followed the official instructions but when I try to upload my p8 key I get this error:
Invalid API Key
Please select a .p8 private key
I double-checked and my file looks fine. When opened in a text editor it looks like this:
-----BEGIN PRIVATE KEY-----
M............Y
-----END PRIVATE KEY-----
In total it has 203 letters/digits (not sure how many should be there).
Is this a problem with my certificate? Or is Codemagic mixing something up?