NC Server is 15.03 on UB18.04 LEMP stack.
NC Client - Android 6.0.1 - NCApp 3.5.1
In the upgrade from 13 to 15 I changed the domain name and implemented web encryption (getting serious about this
13 had broke and is now out of sync with my mobil app.
Pics taken since 13 went down are not being uploaded.
New pics are not being uploaded.
Afaik there is no central way to force a sync. A folder is automatically synced/updated if it is accessed. A small indicator at the top under the header bar shows the synchronization process only if it last a little bit longer. by moving small dots from the left to the right