cat > ~/.config/Element/config.json
for Flatpak:
~/.var/app/im.riot.Riot/config/Element/config.json
{ "enable_presence_by_hs_url": { "https://synapse.matrix.tu-dresden.de": false } }
cat > ~/Library/Application\ Support/Element/config.json
{ "enable_presence_by_hs_url": { "https://synapse.matrix.tu-dresden.de": false } }
%APPDATA%\Element\
{ "enable_presence_by_hs_url": { "https://synapse.matrix.tu-dresden.de": false } }