Long time lurker here. I’m in the US and I managed to order one. It says it’s in the warehouse now, so I should hopefully get it very soon. I had the same problem everyone else did. It wouldn’t let login to my VIP account, errors in check out, etc. Then finally I was able to get one to go through.
I’m glad they at least have a back order. If everyone who wants one puts it on back order they know at least what demand is for it. Then they can produce enough so everyone who wants one can purchase one. It really irks me to see people on eBay posting their order confirmation from Lego and already selling the UCS Millennium Falcon for twice the price you can purchase it on Lego.