ArtTao. Net

. Technical/Support

  1. Why am I automatically logged out after logging in?

Please check if your browser has cookies disabled, or try logging in again with a different browser.

  1. What should I do if I get an error when redirected after logging out?

We suggest clearing your browser cache and trying again; if the error persists, please contact customer service for assistance.

  1. Is there any risk in forgetting to log out of my account?

It is recommended to log out of public facilities promptly to prevent your account information from being used by others.

  1. The page displays "Page Not Found"?

Please check if the URL is correct, or refresh and try again; if you still cannot access the site, please contact the administrator.

  1. The system is displaying a "403 Forbidden" error.

This indicates insufficient access permissions, which may be due to an incorrect file path or security plugin restrictions.

  1. What to do if the page is lagging or loading slowly?

We recommend using the Chrome/Edge browser, clearing your cache, and ensuring a stable network connection.

  1. The button is not responding when clicked?

This may be related to script conflicts or caching. Please refresh the page or try a different browser.

  1. How do I update my browser cache?

Press Ctrl+Shift+R (Windows) or Cmd+Shift+R (Mac) to force refresh.

  1. Which browsers are supported?

We recommend using the latest versions of Chrome, Edge, and Safari. IE is no longer supported.

  1. Can I use my phone to study?

Yes, this site supports mobile access, but some functions are better accessed via computer.

  1. Does the app support this?

Some functions are supported by the official app; simply download it and log in with the same account.

  1. The system is displaying a "network error"?

Please check your Wi-Fi or switch to 4G/5G and then refresh the page.

  1. Why is the course video playing on a black screen?

We recommend switching the resolution or updating your browser/video decoding plugin.

  1. Why can't I upload files?

Please confirm that the file size and format meet the requirements, and check your network status.

  1. Why can't I open the uploaded file?

The file may be corrupted or the path may be incorrect. Please upload it again.

  1. The system is displaying a "Permission denied" message?

Please check if you are logged in and have the corresponding permissions enabled before trying to access the site.

  1. Why is the button on the left side of the page?

This may conflict with the theme style. Please refresh or contact technical support for adjustment.

  1. Is the text style displaying incorrectly?

Check your browser's font support, or try switching to the latest version of your browser.

  1. What should I do if the page keeps showing errors?

We suggest you take a screenshot of the error message and submit it through online customer service.

  1. How do I clear my browser cache?

Do this in your browser's "Settings > Privacy > Clear Cache & Cookies".

  1. Why is the AIOS security plugin flagging an interception?

This indicates that an abnormal request has been detected. If it is a normal operation, please add it to the whitelist.

  1. Can I log in on different devices simultaneously?

Yes, but it's recommended to limit it to 2-3 devices at the same time to avoid account irregularities.

  1. Login page failed to load?

Try changing your network or opening incognito mode.

  1. Why can't I open the course link?

Check if the link is complete, or paste it into a new window to access it.

  1. The system is displaying a "red X error"?

This indicates that code parsing failed. Please refresh and try again or wait for a technical fix.

  1. How do I report technical issues?

You can submit a support ticket or contact online customer service through "Help Center > Technical Support".

  1. Will system updates affect my studies?

Access may be temporarily unavailable during the update process, generally not exceeding 10 minutes.

  1. How to avoid data loss?

It is recommended to regularly export your learning records and test reports to your local computer for safekeeping.

  1. Why am I getting the "Secure connection failed" message?

Check if your local time is correct, or switch to another network.

  1. How can I ensure account security?

Use strong passwords and enable two-factor authentication to avoid storing passwords on public devices.

  1. What should I do if my account is locked?

Entering the wrong password multiple times may result in temporary locking. Please wait 30 minutes or contact customer service to unlock.

  1. Why is the button style displaying incorrectly?

It may be due to a conflict with the cache or theme. Try clearing the cache and then refreshing.

  1. The system is displaying a "timeout error" message?

The network connection is unstable or the server is busy. Please try again later.

  1. How do I switch the interface language?

Select your language preference in "My Account > Settings".

  1. Will technical issues affect testing?

Short interruptions will not result in the loss of records; the system will save the most recent progress.

  1. How do I view browser console errors?

Press F12 to open the developer tools, switch to "Console" to view the error message.

  1. Why is the test page displaying garbled characters?

This may be an encoding issue. Please try a different browser or refresh the page.

  1. How do I enable dark mode?

Switch to Night mode in Settings > Appearance to protect your eyes.

  1. What should I do if I encounter a "file not found" error?

Check if the file path or number is correct; if the problem persists, please contact technical personnel.

  1. Technical support response time?

We usually respond within 24 hours, and we will expedite the handling of critical issues.