That can be extremely annoying. A useful tip is the use of petroleum jelly. The creaking can be caused by different (external) circumstances, but I often get rid of it simply by using petroleum jelly. Just lubricate the iron part of the hinge with a little petroleum jelly. Use a small brush. Is the creaking still not gone? Please contact us and send a video too. Please confirm also whether you have already smeared the hinge with Vaseline, and that this has not helped.