But that's just a suggestion.
I think they definitely should add another button about newsletter and protect your account since what I see here is it looks like they force the players to subscribe to their newsletter to protect their account, so that does mean if the player didn't subscribe to your newsletter their account was not protected or do that "letters" means a different kind of letter such as forgot password letters, security letters, etc.?
I definitely agree with this. Even if they don't send out a lot of newsletters, it's important to give players an option to opt out. The way they did it is even illegal in most countries, for example, in the EU and UK you are required to offer everyone the chance to opt out, otherwise you could be fined for it! They should consult with someone to help them to make their emails GDPR compliant.