FoxTube can't no longer provide Watch Later, Watch History & New Videos feature.

YouTube stopped support for APIs needed to implement above features as of September 15, 2016.

From YouTube v3 API Revision History:

September 15, 2016

This update contains the following changes:

  • The August 11, 2016, revision history update discussed several changes related to topic IDs, including the fact that the set of supported topic IDs will change as of February 10, 2017. The list of topics that will be supported will be published by November 10, 2016.
  • The following changes are now in effect. Notice of these changes was given in the revision history update on August 11, 2016:
  • The video resource's fileDetails.recordingLocation object and its child properties are no longer returned. Previously, this data (like the parent fileDetails object) could only be retrieved by a video's owner.
  • Reference: