The documentation here How to configure Alexa with Gladys Assistant | Gladys Assistant is unfortunately no longer up to date. At the end, it says that only lights and switches are compatible. This no longer matches the version from June 2026, as blinds now also work. It would be great if we could update the documentation here 
Thanks for the feedback.
Correction in progress docs: update Alexa & Google Home compatible devices by cicoub13 · Pull Request #2 · cicoub13/v4-website · GitHub