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.
- If the activities.list method is called with the home parameter set to true, the API response now contains items similar to what a logged-out YouTube user would see on the home page.
This is a slight change that is intended to provide a better user experience than the behavior described in the revision history update on August 11, 2016. That update had stated that requests using the home parameter would return an empty list.
- The channel resource's contentDetails.relatedPlaylists.watchHistory and contentDetails.relatedPlaylists.watchLater properties now contain values of HL and WL, respectively, for all channels. (The properties are only visible to an authorized user retrieving data about the user's own channel.)
In addition, requests to retrieve playlist details (playlists.list) or playlist items (playlistItems.list) for a channel's watch history or watch later playlist now return empty lists. This behavior is true for the new values, HL and WL, as well as for any watch history or watch later playlist IDs that your API Client may have already stored.
- accessing contentDetails.relatedPlaylists.watchHistory and contentDetails.relatedPlaylists.watchLater returns empty lists. This was essential for implementing Watch History and Watch Later.
- activities.list API is needed to retrieve "New Videos". But it no longer returns relevant info for the authenticated user.