This is probably because that you have not successfully authorized the product. After the trial period ends, DVDFab will switch to free HD Decrypt mode. This mode only supports old DVDs or Blu-rays, not new or recent discs, which means you will not be able to copy or rip them. To avoid this issue, make sure to use the correct registered email account information to authorize DVDFab 13 before using it. For instructions on how to register and activate your license, please visit this page: https://www.dvdfab.cn/how-to-register.htm