Looks like the Great Firewall or something like it is preventing you from completely loading www.skritter.com because it is hosted on Google App Engine, which is periodically blocked. Try instead our mirror:
This might also be caused by an internet filter, such as SafeEyes. If you have such a filter installed, try adding appspot.com to the list of allowed domains.
Every Skritter subscription comes with access to our top ranking iPhone and iPad app. Study on the website or on the go; Skritter automatically syncs your progress to keep you learning.
Refund Policy: If you are unsatisfied with your subscription for any reason, let us know and we will issue you a full refund, no questions asked. Just contact us; we'll make you happy.
Note: We cannot issue refunds for Apple purchases. Sorry, but they won't let us! Please try these instructions to get refunds for any purchase made through an iOS device.
Also, we cannot make refunds directly to your card that are too old (more than three months). If this is the case, we can refund older payments via Paypal.
Downtime Policy: If you have been unable to use Skritter due to a bug in the system, let us know and we will extend your account by the number of days it was unusable.
For institutional purchasing, email Jake at send us some info about your school.