I know Alex Crespi at Uptone Audio quite well and have his LPS 1.2 which works just fine. I have had connectivity problems with my Micro-Rendu device which actually Alex helped me sort out when I was at wit's end, in an extremely patient manner, I might add.
If the LPS devices offers no sonic benefit, it could be because your system is not revealing enough to hear the benefit. If you have a problem with his gear, give him a call -- he will answer, and I am sure he will help you sort it out. He is a tip top guy in my book, among the many OEM people in the business that I have the pleasure to interact with, like Don Sachs and Clayton Shaw, two examples that quickly come to my mind. Alex clearly does have supply chain problems just like everybody else.