The gpg issue you faced was caused by a mistake I made a couple of weeks ago when I accidentally lost my GPG keys.
They are unfortunately definitively lost and can't be restored. For this reason I had to create a new PPA.
You can drop ppa:betonniere/bellepoule and replace it by ppa:bettonescrime/bellepoule
Hi Hefin,
The gpg issue you faced was caused by a mistake I made a couple of weeks ago when I accidentally lost my GPG keys.
They are unfortunately definitively lost and can't be restored. For this reason I had to create a new PPA.
You can drop ppa:betonniere/ bellepoule and replace it by ppa:bettonescri me/bellepoule
sudo add-apt-repository ppa:bettonescri me/bellepoule
Yannick