Ok man, the only thing that worked for me was:

1. Change permissions of the key

chmod 400 mykey.pem

2. Make sure to log in using ec2-user, and the correct ec2-99... address. The ec2-99 address is at the bottom of the aws console when you're logged in and seeing your instance listed

ssh -i mykey.pem [email protected]

Ok man, the only thing that worked for me was:

1. Change permissions of the key

   chmod 400 mykey.pem
   

2. Make sure to log in using ec2-user, and the correct ec2-99... address. The ec2-99 address is at the bottom of the aws console when you're logged in and seeing your instance listed

   ssh -i mykey.pem [email protected]