Really basic Samba set-up not working

Background: I had a Debian server running a Samba share, and it played nicely with everyone: Debian, Ubuntu, Mint, Windows 7, Windows 10, Android 8 through whatever is current, even XP (for testing purposes). One of the services (Plex) on that server was problematic, so I set up another Debian server with the same storage devices, and set up the services I want. So far, all of the services work, except for Samba. I figured I mucked up the config some how, so I copied line by line the config file from the old server to the new server, and this had no change. I know it's a problem on the server, since it's the same for all the clients (Linux, Windows, Android, etc) Win10 and Mint are both giving me the same generic error: Permission Denied mount error(13): Permission denied Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) Samba has these nifty logs - one for each client, but, when I try to read those logs, they're blank and all read as 0kb. It seems like a simple thing that should be working... What the heck do I do now? Any advice is appreciated; thanks in advance! (BTW in case it matters, I tried the first time using Webmin, then just the config files in /etc when Webmin didn't work) Output from grep -Ev '^\s*[#;]|^$' /etc/samba/smb.conf as requested in the comments (I changed the username to my given name and I'm working with a test share that will be deleted once I have this issue corrected)

[global]
        workgroup = WORKGROUP
        dns proxy = no
        log file = /var/log/samba/log.%m
        max log size = 1000
        syslog = 0
        panic action = /usr/share/samba/panic-action %d
        server role = standalone server
        passdb backend = tdbsam
        obey pam restrictions = yes
        unix password sync = yes
        passwd program = /usr/bin/passwd %u
        passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
        pam password change = yes
        map to guest = bad user
        usershare allow guests = yes
        unix extensions = no
[test]  
        comment = test
        writeable = yes
        path = /home/tony/test
        valid users = tony

ps -ef | grep -E 'smbd|nmbd|winbind|sssd'
root       42538       1  0 14:41 ?        00:00:00 /usr/sbin/smbd --foreground --no-process-group
root       42540   42538  0 14:41 ?        00:00:00 /usr/sbin/smbd --foreground --no-process-group
root       42541   42538  0 14:41 ?        00:00:00 /usr/sbin/smbd --foreground --no-process-group
root       42549   42538  0 14:41 ?        00:00:00 /usr/sbin/smbd --foreground --no-process-group
root       42551       1  0 14:41 ?        00:00:00 /usr/sbin/nmbd --foreground --no-process-group
root       90058   35763  0 16:18 pts/1    00:00:00 grep -E smbd|nmbd|winbind|sssd