What is the authenticity of the hadiths and supplications mentioned in the book "Keys to Relief for Comforting Hearts and Easing Distress," verified by Muhammad Siddiq Al-Minshawi?

Warnings have previously been issued regarding the aforementioned book in a prior fatwa. We emphasize that Muhammad Siddiq Al-Minshawi, to whom the book's verification is attributed, is not the well-known reciter (Shaykh Al-Muqri'). Rather, it is a case of impersonation or a similarity of names. The author himself is unknown, as there are editions without an author's name and others bearing the name "Muhammad Atiyyah Khamis and Abd Al-Wahhab Meet Kays."