You might want to ask in the LV forum and post some photos of the strap where the edges are breaking. There was a well known defect in some LV bags where the edging/glazing would deform/dent or crumble off. LV experts would know about this bag and potential issues. You could also send photos of the issue to
Fashionphile and see if they would offer you a refund or a partial refund. If it is one of the bags impacted by the huge LV recalls, LV will repair the bag, even if you are not the original owner, and if Fashionphile gives you a partial refund that could cover the cost of repairs.