Are you able to add the site without any errors?
Does the connection process take a while before it fails? If so, the app has a more aggressive timeout duration as compared to the direct connection. If the connection is poor and taking longer than 6 seconds to complete this could be the cause of the problem regarding the app. Let me know so we can adjust this value.
The logs fail to come up (aka error) or it says no logs for selected entry? Let us know once you have loaded the SD into a computer so we can identify where the error is.