http://be.sponsorpay.com/assets/web_client.js

Did not work for me. Contacted support twice so far. They recommended to manually uninstall SIMS3 and reinstall + use win7 compatibility mode.

Did not help at all.

The other time they simply did not respond in the chat.

Problem remains, I will continue challenging the support.

Last time I had a problem it took me 5 or 6 chat session before they could help me.