The submission date is 16th September, so this was ready for publication before the consultation was cancelled. It's likely been listed as invalid because the consultation has been put back. It still has to be listed as being received and logged on the system though, so an updated application will likely appear within the next week or so.
As
@NickB has rightly mentioned, the consultation is an event to raise awareness of the application and to allow consultees to have a proper view of the plans. Most importantly, it allows questions to be asked informally, with the aim being to reduce the number of objections made.