Can I use Smb4K to mount Samba share w/ password at startup?

I use Smb4K to mount two password-protected Samba shares. These shares are on two Synology network attached storage (NAS) devices. I added Smb4k to my "Autostart" system settings, and I checked "Remount shares" in the Smb4K settings. When I start my desktop running KDE Neon 5.23.5, Smb4k starts and _tries_ to mount the shares, but asks for a password. If I enter the password, the shares mount. However, I want to skip this step. I checked "Save logins in a wallet" in the Smb4K settings, and I can see the correct IP, login, password, and workgroup in the KDE wallet manager. Still, I have to enter the password for these shares at start up.

If it matters, my bigger goal is to completely automate backups to one of these shares. Otherwise, I rarely access files on these shares, which are otherwise long-term storage of files I rarely use. I use Neon's backup manager to back up my desktop to one of the Shares, and I want to remove any action on my part. I am new to KDE Neon, so I am happy to change any part of this workflow. Before, I used Gnome and Deja Dup. Deja Dup is good, but I like the KDE tool set (specifically Kate and Kile) and how the backup manager integrates with the DE better than Deja Dup.