According to our records, you are a licensed developer for a Sitefinity license with the registered domain: axtpn.com
. You can download its license key from your account and use it to reactivate your expired trial version in order to create more projects on localhost with no limitations. In case you want to launch your project in the future, you can purchase a new license and apply it to this trial.
As for your second question, you can sign up for the Sitefinity online sandbox
the Telerik team