@marco said in Cannot add new account:
How can I resolve with the mobile data? I mostly use it instead of wifi.
It’s not a DAVdroid problem. You can see the proxy in Android settings / Mobile data / Access points (APNs) / your access point / Proxy. If this proxy doesn’t work properly, please contact your provider or just delete the proxy setting (and restart DAVdroid / the system afterwards), if you’re allowed to do so (may be restricted).
Same problem as here, for instance: https://forums.bitfire.at/topic/422/certpathvalidatorexception-but-my-domain-is-a-on-ssllabs