The IELTS partners have been contacting test takers from around the world to inform them of changes to their test results. As a result of some apparent abnormalities, test results from as far back as 2024 have been adjusted. The British Council IELTS website has crashed under the strain of users attempting to log in to see their updated results.
It seems that reading scores are mostly affected. Indeed, they may be the only scores affected, as far as I can tell.
More on this story as it develops.