Thank you for the link to your Layout. I have downloaded the Layout onto my Android Player and it is Displaying without issue. All 3 of your Tickers are returning the requested data from your feed, including the images in the main region in your Layout.
Can you specify the actual version of Xibo for Android you are running, just in case it is not the Latest version? Also, what hardware device are you using for your Android Display? Is that device up to date and has a stable network connection?
I would recommend selecting the Displays option in your CMS, clicking the down facing triangle at the end of the Display and choose Edit. Next select the Advanced tab and set a period of time in the Auditing Until field so that you can capture logs from the Display whilst the Layout is scheduled. If possible, I would recommend making sure that no other Layouts are scheduled on the Display so that you can see any errors or messages relating to this Layout easily. You can then view the logs in your CMS under the Log option, to see if any errors or other messages are being generated that would help to locate the cause of the issue.