A tough zipper is a common problem, especially with new bags. Fawn Design uses strong zippers, which may be tough when new. If your zipper is tough, try to open and close it several times; this will make it relaxed and smooth.
If you notice the zipper is not closing to the end as it should, do not fret. Try to pull the zipper all the way open and close it a few times. If the zipper is still tough, do not hesitate to contact the Fawn Design customer support team for assistance.