Try these steps:
Refresh Your Browser: Sometimes a simple reload can fix temporary glitches.
Check Your Internet Connection: Ensure your connection is stable. If possible, switch to a wired connection or a stronger Wi-Fi network.
Switch Browser or Device: Sometimes browser compatibility can be an issue. Try using a different browser or device.
Clear Cache and Cookies: Clearing your browser’s cache may help if outdated data is affecting the display.
Contact Support: If the issue persists, please reach out to our support team with details (such as your browser version, device, and a screenshot if possible) so we can help resolve the problem quickly.
These steps should help improve the visibility of the instructor’s screen or slides.