PDF Expert 6 supports SMB v1 and SMB v2 in the current version.
If you face any difficulties using your Local Hostname while connecting, please change it to the IP address. If you face difficulties while connecting with the IP address, specify the folder in the host field, e.g.
To connect SMB on Windows machine:
Please note: if you change the network frequently but sync the folder between your Mac and iOS device, please use mac's Hostname in URL field instead of the IP address since IP address changes while changing the network.
Examples of valid URL: