If you enabled wide link support but it does not work, SELINUX is probably blocking you.
Try to issue setenforce 0 and to retest your configuration. If it works, then you found your problem's source.
If this does not work, in [global] section add:
- wide links = yes
- allow insecure wide links = yes
- unix extensions = no
Than restart samba and re-try your test case.