Here's the error
Operation timed out after 5000 milliseconds with 156375 out of 219476 bytes received"
message: "We're sorry, the demo failed to finish importing.
This means your host's timeout setting is low. Please contact your host to increase the timeout. I've tried increasing it using htaccess but it won't take effect. Maybe this is not allowed in your host. If that is the case, regretfully, you will need to move to a better hosting provider. Here's a guide in choosing web hosts.