Contact
Contact
Send feedback, bug reports, feature ideas, and content suggestions to 2414288285@qq.com.
2414288285@qq.com
For the fastest response, include the page URL, what you were trying to do, and the browser or device where you noticed the issue.
What to send
Bug reports
Include the page URL, browser, device, and what you expected to happen.
Feature requests
Useful requests include new fonts, better worksheet controls, and export options.
Content suggestions
Suggest letters, guides, or practice examples that would make the site more helpful.