The address https://bsjauctions.com/ (which I'd expect to take me to their auction site) takes you to a website with 6 major options and no log-in capability.
The "Auctions" tab only provides a link to their archive, and NOT to their current auctions.
If you click on "Bid Live", takes you to a page which says :
Please click the button below to be redirected to our live bidding platform with Auction Mobility.
Please note this will require a new registration with Auction Mobility, if you have not done so already.
Clicking the button takes you to the https://bsjauctions.auctionmobility.com/ site, as 1887jubilee suggests above. This is a site that my own PC really has trouble loading (probably due to my lousy broadband service)
You can then register or log onto the site and the "Auctions" tab will take you to forthcoming auctions or past auctions where you can access the lots via the "xxx lots" button.
I believe that you also have to register to bid for every auction which is time-consuming, involving them emailing you back to confirm acceptance for bidding.
As I said above, all very non-intuitive, unbelievably long-winded and in dire need of SORTING OUT.