Most underground forums maintain a Telegram "Status" bot or channel. This is the most reliable way to get the latest mirror link if the primary site goes down.
While Discord frequently bans "ripping" servers, new ones pop up constantly to provide updated URLs to their member base. ripperstore forums register link
Ensure the URL is legitimate. Scammers often create fake login pages that look exactly like RipperStore to steal your credentials for other sites. Most underground forums maintain a Telegram "Status" bot