I have the same behaviour on a Sony Z3 Compact tablet.
As far as I understand it, the change is not saved and therfore davdroid can not do anything at all 🙂
nethertheless I hope that somebody has a hint for my there I have to look to solve this problem.
A different contact app can not solve the problem (like true contacts) because they all use the same apps in the background which manage the contacts.
@zoulhh could your solve your issue and if yes how?
No way to edit server settings.
I have a policy of changing passwords on a regular basis. This is also mandated by corporate IT. DAVdroid does not have the ability to change any server settings once an account is created. I have to remove the account and then go through the process of adding an account again.
Luckily its only one account I have to do this with, but its still a pain to do.
Thanks for your suggestion. This is a duplicate of #219.