Reddit reviews Aleene's15594 Leather & Suede Glue 4oz

I recommend going to a cobbler since the shoes aren't cheap, but you can also try using this if you don't want to. There is a chance that the glue might not function with the shoes though

I understand your frustration with their customer service, but don’t worry because this is a very minor defect. I have several shoes from more expensive brands with the insoles peeling back at the edge (it’s kind of inevitable with time and wear) and I always just glue them back down myself. This is what I use:

https://www.amazon.com/gp/aw/d/B00178RING/ref=yo_ii_img?ie=UTF8&psc=1

I've used Aleene's with some success in the past. Glue in a patch first so there is structural support for the small pieces you want to glue back in.