In English, we find "Comments" is quite good enough. But there is no requirement for exact translations into every language. Each has different needs. So if you think your language (Turkish?) needs a different phrase, you can do that in the official translation.
This expression is not valid for only "Request new user account".
So we are not able to do custom translation for "Request new user account".
You must have the global translation.
This is not descriptive.
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