What Fedora is set up for, and what I use and know, is "user" share security where you have the same username on both the remote, server, machine; and on the local machine.
I also set up samba usernames to correspond with the Linux usernames. There is a place to do that in:
I'd try that first. It looks like it is a permissions problem.
Though, it may just be that your Fedora box is preventing the mounting of your share on
I would think that pretty likely. After all, if it succeeds then you would loose visibility of all of your home folder.
That's why I specified:
as the mount point because that is what it is designed for.
At the minimum you would make a:
folder to mount your share in to.
However, you may still have to contend with SELinux objecting so don't do that for now.
Go for the simple "/mnt" option, if that works then we can elaborate.
Don't forget also that hidden behind Linux/Samba usernames is a numerical identity. That may not be the same on both of your devices.
I've got one system where I have to specify a numeric user id as part of the mount command before I can write to a share.
Just keep that in mind for later.
To start with keep it simple and we can expand the commands later.