Just as a precaution, save SoapCalc to your computer.
When you bring SoapCalc up, click 'file' and then 'save as'. Just save it to your desktop (or wherever) and it will work when SoapCalc isn't online or is having issues.
The only drawback is that you can't save any recipes on the saved one. Your recipes will be fine on the online version though.
eta...do this with the old version...not sure if it will work with this new one.