Hello, please I keep getting this popup anytime I open my o2 app and I don’t think I have any outstanding payment as at the moment can someone please help me with this  “uncertainties about the invoice.There are ambiguities regarding your bill, so are  Changes are only possible to a limited extent.  Please check if open arrears and settle them immediately.“ 

thank you 

Edit o2_Bianca: Moved to English o2 Community mobile