If you get a red "X" on the scan page, please click here.



If you get the error: Your Dynamic Web TWAIN serial number is invalid, please click here.



If you get the error: Your trial license has expired, please click here.



If you get the error: The License Number is for trial version, please click here.



If your problem persists, please contact us at TWAINsupport@dynamsoft.com.

References:

How to deploy Dynamic Web TWAIN on web server?