What is my OMV version? (5.0.5 or 5.2.1-1?)

I am facing FTP not running (Enabled but not Running) after reboot problem. I saw in a thread in this forum saying that this problem will be fixed on 5.0.9. Another thread saying that will be fixed in 5.1.3

I downloaded OMV 5.0.5 from https://sourceforge.net/projects/openmediavault/files/5.0.5/

Now I notice that my OMV version is 5.2.1-1 (Usul) on System Info in OMV web GUI. (please see image below)

The question is: What is my current version of OMV? (5.0.5 or 5.2.1-1?)
My OMV automatically updated to 5.2.1-1 through Web GUI. Isn't it?
(sorry that I am asking a stupid question but I am really confused)

I 've got a reply from @macom in another thread.

The answer is "My OMV automatically updated to 5.2.1-1 through Web GUI."

Btw, it is frustrating that ftp is still a problem.