By contacts app with my FP3+ I’m actually reading/writing my contact list stored in my own Nextcloud room (is not /e/ but provided by another association using Nextcloud to offer storing services).To sync them there is the WebDav “engine” by defaoult on /e/ (with correct parameters for connection and syncronization)
With FP3+ for one of my contacts I’ve added more customized field to enter differents phone numbers (see the scrshoot)
after turning on the device today and having another look, the custom-label (“Neu”) created on the /e/-device (v0.16) indeed showed up in a Nextcloud remote (v20)
so it seems to work at least in this combination of versions? If you want to dig into this, the way custom labels are defined is laid out in
hey Luca thanks for getting back to this, do you remember what the versions were prior and after of nextcloud server (contacts version can be read from this) ?