Here are a few general things to try when things don't seem to work right. (In fact, these steps can be useful when any website isn't working for you.)
Make sure your browser is up to date
To check the version you currently have, look for 'About' under the Help menu.
Clear your browser's cache and/or cookies
Occasionally old or corrupt files can get stuck in your browser. To test whether this is causing your problem, try turning on your browser's Private Browsing mode. (AKA InPrivate browsing in Internet Explorer, or Incognito Mode in Chrome.) If that solves the problem you were having, you can move on to clearing your cache:
Try TEMPORARILY disabling add-ons
While modern web browsers themselves are usually pretty well built, add-ons can often contain bugs. If you use add-ons (aka extensions), even if they seem completely unrelated to AutoTempest, try temporarily disabling them (and restarting your browser). If that solves the problem, you can then enable them systematically to see which is the culprit.
And if none of that works, we have a forum set up where you can search for more answers, or ask your own question. There's lots of useful info there already, and more being added every day. Feel free to post your question there if you don't see the answer already. We check for new posts regularly. Or if you prefer, you can always just email us.