No problems with Certified; looks like I was one of the lucky ones!
I bought GLP-2 30mg from Certified Peptides twice, about six months ago, when I was first venturing away from tele-health and prescription peps and didn't really know where to look for vendors. At that time they had good ratings on TrustPilot and a few other review platforms (plus I think maybe someone had recommended them on Reddit?) so it wasn't until weeks later that I began to notice all the negative screencaps and anecdotal warnings about the owner's behavior. I realize now that their prices are quite high, and I've found more affordable options since then, so I'd be unlikely to order there again, but my first two Certified Pep purchasing experiences were delightfully calm and trouble-free. Shipping was prompt, communication was adequate and timely, vials were well-packaged, and the peptides performed perfectly both times