Cross DJ Error Message

Cross DJ Family,
I am a new user of Cross DJ. When I open up Cross DJ on my Samsung Galaxy A tablet, I receive the following error message when the app starts:
"Failed To Query Inventory: lab result: Error Refreshing Inventory (Querying Prices Of Items). (Response:6:Error)"
Any thoughts as to what it can be?
Sincerely,
DJ Euro
I am a new user of Cross DJ. When I open up Cross DJ on my Samsung Galaxy A tablet, I receive the following error message when the app starts:
"Failed To Query Inventory: lab result: Error Refreshing Inventory (Querying Prices Of Items). (Response:6:Error)"
Any thoughts as to what it can be?
Sincerely,
DJ Euro