A new PHP version has recently been released and is rolling out automatically on WordPress sites. Without getting bogged down in the technical details too heavily, this new version does not support htaccess, which is therefore going to cause certain redirected URLs to no longer redirect properly. However, if sites stay on or revert back to version 7.3, they may wind up being subject to security breaches since that version’s security will no longer be updated.
The developers are continuously sweeping sites, but if you see something out of the ordinary on your site, please reach out to us so we can troubleshoot it.