Email kostjum@inbox.lv.
Include the extension version, browser version, a description of the problem and, for a lost license, your purchase reference. Do not send card details, secret API keys or private page content.
In ChangeSpot Settings, paste your saved key and click Verify license, or load your ChangeSpot license backup. An internet connection is required. If your key and backup are lost, contact support for purchase verification. Automatic license email is not enabled.
ChangeSpot checks saved pages while they are open. It does not monitor closed tabs. Canvas, closed Shadow DOM and cross-origin frames are unsupported. Values are limited to 4,000 characters. FREE supports 3 watches and 10 history events each; PRO supports up to 1,000 watches and 500 events each within local storage limits. PRO costs $2.99 USD once, plus applicable taxes shown at checkout.