I've been struggling with this for a while.
Using Android Alfresco Content app the following error is returned on attempt to connect:
"An error occurred : null"
Server URL is of the form https://alfresco.foo.bar/alfresco
I have also tried https://alfresco.foo.bar/alfresco/service/cmis but this gives "Your service url value is incorrect"
I have also tried https://alfresco.foo.bar/alfresco/api/-default-/public/cmis/versions/1.1/atom but this gives "org.apache.chemistry.opencmis.commons.exceptions.CmisNotSupportedException"
I have also created create a file called configuration.json and placed it in the /Company Home/Data Dictionary/Mobile/ directory of Content Services in line with this: https://docs.alfresco.com/content-services/latest/config/mobile/
The newer Alfresco Workspace app works perfectly but has a reduced set of features from those I want.
Community - 7.2.0 - Dockerised
Running behind Nginx Reverse proxy with configuration as per:
Running HTTPS with Docker build of Share container as per:
All help appreciated.