I bought these when they launched them on Kickstarter. I've used them once and ended up on the ground in the morning from stretching. Not something that is pleasant when it's 5°F outside. I weight 165-175 depending on season and training, so nowhere near the capacity load of 220. These have been delegated my 5 year old's setup for when she wants to hang. Can't trust them myself.
IP15My sets worked fine... I've hiked in all sorts of weather, with temp extremes. I would contact the sellers about a swap. I have both sets and no problems with either. Best of luck!