Here’s what I got when I ran it through Google Translate :

Misskey.io is operated as a service for Japan, but recently Japan number of user registrations from overseas has increased rapidly, and moderation has not been able to keep up. At the same time, it has become difficult to provide sufficient support, so at this time we are restricting the registration of new users from overseas. We will inform you again when we are expected to resume, so please wait for a while. Thank you for your understanding and cooperation. Related Entities registration

What’s with the NSFW tag and the weird title?

Upvote for title

What is the intended purpose? At first I thought it was a number placeholder, but then we use x for that (OP even used an x).

Edit: Is it a currency placeholder?