This is the article we see the screenshot for; the source given is Neon Nettle.
Neon Nettle isn't a very reputable site on the best of days, but when you click the link, it goes to a 404 page.
Gonna take this with a grain of saly without better sourcing. Surely this would have been reported in some regular outlet.
Edit: This is the actual story. For two weeks, the website didn't record any form submissions into the database, they were just lost into the void. The headline above takes this kernel and spins it up into something much bigger and categorically different.
"Due to a change in our website address to www.iicsa.org.uk on 14 September, any information submitted to the Inquiry between 14 September and 2 October through the online form on the “Share your experience” page of our website, was instantly and permanently deleted before it reached our engagement team."
iicsa.org.uk/news/share-your-experience-online-form-an-update
(post is archived)