I'm so discouraged....and looking for an alternate solution. I was even considering going back to using risers on a known board. Then, I found the Onda B250 BTC-D8P is available in the US :
https://www.waikey.com/item/onda-b250-btc-d8p-8-pci-e-slots-motherboard-8-gpu-mining/
Not sure if I should trust this site.
That is an interesting looking board ...
Not to mention that the site opens with the SPRING EDITION for women and men
That Konrad Kries fella is a hell of a mining motherboard star designer
)