Accessing xcancel.com yields the message

On Monday 24th August at 8PM EST, we received at letter from X Corp. asking to cease and desist the service XCancel.
The service XCancel is stopped until further notice.
We are seeking legal advice and won't share more details for now.
Thank you for the trust you have put in these two years of XCancel.

Other nitter instances do not matter for this market.