running Nextcloud 3.5.0 (last updated on 13.02.2019) on LineageOS 14.1 (Android 7.1.2) since the same date it first runs just beautiful. Viewing Files, uploading Files, syncing Photos, everything was just fine.
Then I opened the AppClient and had to re-Login (?), tried so but the AppClient just crashes after hitting Login. Tried with User- and Admin account but all the same.
Nothing in the server logs…
I found this Thread which probably addresses the similar topic?
Also this old Thread seems not to be worth to look at