As of late, I've been getting these "Service Unavailible" errors when trying to do things on the site, such as respond to mail or refreshing in the shops.
Here is a screenshot of the error I'm getting.
I'm not sure if I'm getting this error because the site is having issues or not. :x
I think it must be a problem with the site. I was getting them as well a minute ago, so it's not just you.
I kept getting the error about 10-15 minutes ago, non stop. First time that's happened and caused issues with the site since it came up and was stable enough. Hopefully this is just a minor error that can be fixed.