Hi irada satymova,
Thank you for your patience.
I confirmed removal of Reading coach feature from our product group team. And customers will only re-direct to Reading coach app: https://coach.microsoft.com/en-us
However, we value your feedback, and your suggestions are important to us.
Could you please drop your concerns to our feedback forum: https://feedback.azure.com/d365community/forum/79b1327d-d925-ec11-b6e6-000d3a4f06a4
Please accept the answer and upvote for visibility & remedition of other community members, facing similar challenge.