Infuse can't find plex

Hi everybody
I have update infuse app to Infuse Pro v4.3.4 and Plex Media Server (on Readynas 100) to version released on November 8, 2016.
I have enable DLNA on plex and I have add ip of my iPad to “list of ip addresses and networks that are allowed without auth” on plex network config page but Infuse can’t show PMS anymore.

How can I do it?