Unable to purchase 2DXY Slick Moves in Extension Warehouse

I downloaded a trial copy of 2DXY Slick Moves. When it expired, I wanted to purchase it but I could not find a way to buy it. I uninstalled the trial copy, thinking I could reinstall a paid copy but when I push pay $25, I get an a pop up saying “bread crumb shopping cart is empty” and I am unable to proceed.

I contacted the developer, Barry but he said he was unable to do anything on his end He said I should contact the forum. Please help.

Thanks.

For anyone chancing across this post, there were server problems that are fixed, but the shopping cart issue is still happening from within SketchUp. Buying extensions in a web browser seems to be working ok.