Yes, that's because the technology has changed. Advantage is that wifi is no longer necessary and thus the battery of the remote control lasts much longer. Disadvantage that older cams are no longer supported.
No, according to GoPro, this remote is only compatible with the "Hero9", "Max" and "Hero8". Thank you very much for your comment :). We have forwarded this internally and hope that the information can be adjusted in the near future.
First I have to switch on my GoPro 9. This is done - after setting it up beforehand - by pressing a button and the camera starts recording. Then I switch on the remote device and recognise the running camera. Then I can control the GoPro 9 in detail. I don't know the GoPro 10.
Thank you very much for your comment. We will gladly forward this internally to the responsible department and hope that this will be checked promptly.
Smart Remote already doesn't work with Hero 10, and it doesn't need to, as everything can be controlled via the app on the mobile.
(I have returned the Smart Remote)