Update: Looks like they are giving me a partial refund $10 USD, for replacement eartip(s) once they are available. So that's a plus.
So far the only issues I've had are with the left earbud having some issues of static or slight dropouts. It tends to come and go, so I'm not sure if it's my phone or the buds themselves (The Samsung S8 has less issues than my Pixel 2 XL). Granted, they are using Bluetooth and they are quite susceptible to interference and rely on a line of sight. Bluetooth can have great signal strength, but, you do trade off battery life. The Logitech UE Roll and Anker's Soundcore's have a great Bluetooth receiver that can travel through a few walls before having the music cutting in and out.
Kickstarters can be a hit or miss. Granted, the majority of the stuff on there can be pretty sketchy and stuff being delivered is overhyped, stated, etc.
Zolo's Kickstarter was not without hitches, and while they are a subsidiary of Anker, they probably comprised of a new team that underestimated the initial demand and found themselves overextended. Could they have done things better, yes. More than likely, they could have used more help on the logistical side of things, as it is apparent that some people were getting them straight from China and later through the Amazon distribution network (more efficient and less hassle for customs).