Go to Settings page and change Server field to one of the servers listed below and save changes (sometimes restart of app might be required). It should start working again...If you are using older version of eSteem, you are likely connecting to steemd.steemit.com server by default and app is not able to fetch posts because server is announced and discontinued/upgraded to https://api.steemit.com. So please update you connection node to one of public end-points/servers.
Thank you @good-karma for devlop this application. It is really good i love this app.
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