I'm not sure what permissions route TD took in his video, however, I see that you have user1 with read/write to folder "Very" using an ACL. Why not go a different route and use standard permissions?
In OMV, under Access Rights Management, User; create a username + password that exactly matches the username + password that you use to log into your Windows or Mac client - the same client that you're using to open the share. Try it and tell us what happens.
**Edit: I see this was overtaken by events.**
All's well that ends well.