I too am having the same problem. Although I have not tried the free sign in route.
Five days ago the game Solitaire Home Story would no longer load. It stopped at the end of one round. I tried all the recommended things, like clearing cache, rebooting system, different browser, etc.
I've chatted with technical support twice ... I've emailed them ... etc.
However, my computer or browser simply cannot be the issue. I am running at 33 mbps average speed. I don't have multiple things running at one time. I am not having any problem with any other games. Not having a problem with other sites like google mail, amazon, etc. And yet, when I click on Solitaire Home Story, the picture of the house comes up immediately, and the load "bar" fills until full, and then it just keeps doing the one, two, three dots over and over and never starts the game.
Obviously I would like the game to work, but just as importantly I would like to hear back, as far as what is being doing to find the problem and fix it.
Could it be as simple as they have not installed any further levels? Mine ended sometime shortly after installing the shelf in the laundry room for the laundry soaps.