Ah! I came here to ask exactly the same question. For some time I have seen these two accounts from my DAVx5: me@place.com and me@place.com ug and I wondered which was the correct place to store my contacts. So I need to use the “ug” one…

@devvv4ever AOISP 10 on Pixel 2 XL with Nextcloud 20.* not working for me with all apps i have tried so far! I have a Nexus 9 Tablet parallel. What infos can i provide?

@mbiebl Yes, this has been fixed with Google Contacts 3.39. We’ll keep the page a bit for users who don’t update often, and then remove it.

@ouafnico It’s already released. If you have F-Droid, you will have to wait until they have compiled it (usually takes a few days).

(Or, of course, you can compile it yourself.)