I'm getting error code 3006 when I try to register I purchased BTD5 Deluxe in the past, how do I get my Steam key?

Bloons Super Monkey 2 Upgrades and Research Why do I see a large exclamation mark!

Games wont load I'm logged in to the website, but the game isn't registering me as logged in Can I change my username? Can I change the email address linked to my Ninja Kiwi account? Flash End of Life How do I become Friends with someone?