I use Nextcloud 20.0.7 (Snap /Ubuntu Server 20.04) and the nextcloud app from the Play Store version 3.15.0.
With this app version I can not connect to my nextcloud via DynDNS url.
In Broser no problem, with nextcloud Talk also no problem.
If I give the IP (ipv4) address as host a connection is established.
If I enter the IP (IPv6) I also get the message that no host could be found.
Apparently the communication takes place primarily over ipv6, which probably can not be resolved by NC?
With an older Version of the App works, downloaded from nextcloud.
Is there a solution for this?
I found something similar under the link, but no solution is shown there.