Update by user Aug 14, 2021 Company fixed the issue and I have been provided with full refund. Exchanged for a newer manufacturer date, and worked fine. Floor made in 5/2021 was defective.. Original review posted by user Aug 14, 2021 I have done 4 rooms in my house with Pergo and no problems. Bought 9 cases to do a small bedroom making sure it was the same floor I bought one year earlier. However, we could never get the floor to engage or lock. We go a refund for flooring made 5/2021. Bought new made 07/2021, same kind, and worked like a charm.Try to User's recommendation: Try to buy same make date, if a problem, exchange for another manufacturer date.