Thanks for your answer. I try to write in english… what makes me suspisious is that the name of the author is mentioned in the code. I dont want the pictures sent to his server. Can you explain why the author is mentioned and what this part „RandomNerdTutorials“ does?
Perhaps the author was just showing an example of code intended for his/her own application, and expects you to change those details for your own purposes, or remove them. There is no need for you to advertise "Random Nerd Tutorials".
The Telegram Bot library mentioned in the article contains a README.md file, which explains some of the details on how to use it.
A download link is included in the article. But this comment is obvious nonsense:
Du findest sie im Bibliotheksverwalter der Arduino IDE –diese kann jedoch veraltet sein. Deshalb empfehlen wir dir, die Bibliothek hier bei uns herunterzuladen.
„RandomNerdTutorial“ ist the author of the code. So I will try to replace „ RandomNerdTutorial“ by „Blindfisch“ and I will tell you if it works. Thanks for your help.