Thank you for using the Slingbox Answers Forum! I'm sorry to hear you are no longer able to access the program guide via SlingPlayer for Android Tablets.
Could you try uninstalling and reinstalling the application, if you have not already done so? It very well may be an issue with the new version of SlingPlayer for Android Tablets.
You will not have to pay for the application again. As long as you are logged into the same Google Play account, you were logged into when you purchased the application, it will not ask you to make a purchase.
Feel free to reply if this does not work for you.
The Sling Moderation Team