CalmSync iOS

The Calmysync application currently uses therapy-related YouTube videos as part of its content. These videos may be protected by copyright, and using them within a commercial application could lead to copyright violations in the future. This poses a legal and compliance risk for the product.
According to the Youtube Terms of Service
Under the section Name "Your use of service" in the Permission and Restrictions it has written as

1.access, reproduce, download, distribute, transmit, broadcast, display, sell, license, alter, modify or otherwise use any part of the Service or any Content except: (a) as expressly authorized by the Service; or (b) with prior written permission from YouTube and, if applicable, the respective rights holders;

According to the Fair Use on YouTube - Four Factors:

Four factors of fair use
In the US, when courts decide fair use cases, a judge will consider how the four factors of fair use apply to each unique case. The four factors of fair use are:

Purpose and character of the use: Nonprofit education uses are more likely to be considered fair use than commercial uses. Adding new expression or meaning to the original material is more likely to be considered fair use than merely copying the original.
Nature of the copyrighted work: Using material from primarily factual works is more likely to be considered fair use than using purely fictional works.
Amount and substantiality of the portion used: Borrowing small bits of material from an original work is more likely to be considered fair use than borrowing large portions. But, if what’s borrowed is considered the "heart" of the work, sometimes even a small sampling may not be considered fair use.
Effect of the use upon the potential market: Uses that harm the copyright holder's ability to profit from their original work are less likely to be fair uses. Courts have sometimes made an exception under this factor in cases involving parodies.

Please refer to the screenshot