Contact
Help make the toolkit more useful.
A clear issue report makes a broken link, an unreadable code, or a confusing step easier to investigate.
Contact information
A verified contact email has not yet been published on 4ool.com’s contact page. A direct email link will appear here when a verified address is available. There is currently no contact form or message submission service on this website.
The main 4ool contact page is the source for current public contact information. We do not invent an email address or postal address.
What to include in a report
- The page URL and QR type you were using.
- What you expected and what actually happened.
- Your browser, device, selected image size, and output format.
- For printing, the paper size, card dimensions, and browser scaling setting.
- A small example with made-up data that reproduces the issue.
Do not include real Wi-Fi passwords, private contact details, authentication codes, or confidential images. The tools do not automatically attach or send your inputs.
Try a quick fix
Check the scanning troubleshooting guide or the print guide. For how content is processed, read the privacy notice.