Hello Black Mamba,
Thank you for your response!
I use Edge. I cleared the cache and restarted my PC.
Unfortunately, nothing has changed.
After several calls with Swisscom, it turns out that I can’t do anything. Still no forward or reverse possible during a film. On the other hand, if I want to avoid having to connect an HDMI cable from the PC to my TV, I was told that this is possible with a Samsung or LG TV from 2018 (mine is an LG from 2017). Indeed, according to Swisscom, the Blue Air TV application cannot be downloaded on televisions before 2018. It’s still strange, because I was able to download other applications, such as Netflix, Youtube, Zattoo , etc.
So, if I buy a new TV, I will no longer need the HDMI cable, but the problem will still be the same with replay and the impossibility of moving forward and backward, even outside of commercials. .