how are you trying to access the share? windows explorer or what?
as i suggested, from the command line, mount the share and then list the share, without using rclone.
check out howto guide about rclone+smb
https://forum.rclone.org/t/how-to-access-smb-samba-with-rclone/42754
this works for me, notice that i specify the users, do not use nobody, no guest access, try that setup as a test.
[agent_vserver03_ro]
path = /data/falconer_agents/vserver03/ro
valid users = @agent_vserver03
browsable = no
read only = yes
guest ok = no