Happy Endings™ review for Shippo ‑ Simplified Shipping

We've been using Shippo for years. Most of it works great, but when trying to process multiple orders at once we almost always have a few fail and it causes a lot more work for us. Also wish they had a white list or default shipping method by default as we end up sometimes selecting the wrong one and having to refund label (wait 30 mins) then make another using the correct method.