Why can't i get gnome extensions installed on bookwork?

[Dan Ritter]

Hello list,
i am out of luck and into a rabbit hole, please help me out!
Now, i am lost. I thought, in stable, the Fox-esr would be compatible
with the gnome extensions, but it claims, that would not be case.
What am i missing?

As far as I can tell, this needs two parts. A Debian package
(gnome-browser-connector) and a Firefox extension which comes
from https://extensions.gnome.org/

- GNOME doesn't want to support the extensions.
- Firefox doesn't want to support the extensions.
- Debian doesn't want to support the extensions but provides
the package
- the person who wrote the GNOME extension manager doesn't
provide support.

-dsr-

[Richard]

In theory it should work, as Stable should have the new connector. Maybe
because they adapted to Manifest V3 they had to drop support for ESR.
Though they would have written that in the changelog. But you can easily
test that, Mozilla has their own Debian repo now. Install the normal
Firefox from there and try with that.

As a workaround, you can install the Extension Manager as Flatpak, this
will allow you to install and manage extensions - compared to the
preinstalled one only being able to manage them.

Best
Richard

So i tried to follow that suggestion, but ...
on a fresh bookworm install (with firefox-esr), going to
extensions.gnome.org, i get the prompt to install the
browser-integration first, but following it leads to a failure-message,
saying, it would be incompatible to my FFox-version (115.12.0)
The Wiki-page referenced tells me to install the connector fiorst, but
the latter is installed by default in bookworm.
Now, i am lost. I thought, in stable, the Fox-esr would be compatible
with the gnome extensions, but it claims, that would not be case.
What am i missing?
DdB