All parties on the lease, including landlords and co-landlords, have until 11:59 PM on the lease start date to finalize signing the lease. If the lease was not signed by all lease parties by the lease start date, the lease signing will automatically be cancelled.
The landlord will need to edit the lease start date to a present or future date and resend the lease for signing.
Other reasons the lease signing may have been canceled, is if there was inactivity on the lease (no signing or edits) for two consecutive months. Or if two weeks have passed after the renter(s) have signed, but the landlord has not yet signed.
In these instances, the landlord will need to re-send the lease for signing.