[blindpirate]

Thanks for the feedback. There's actually a bug in bot-commenting code so the issue was missing in PR comment. It should be like this: https://github.com/ByteLegendQuest/java-fix-index-out-of-bou...

I'll fix.

> Where was I supposed to find this text?

It's like a promotion code, you should get the invitation code from someone else, like friends. It's a bonus, not a necessity for the game.