MOBILE APP DOES NOT WORK PROPERLY FOR CREDIT CARD STATEMENT PRINTING

We have always used a normal discovery credit card. We were then pressurised into joining discovery bank. We received a new discovery black credit card. Now we do not receive statements via email any more. We were told to get our statements on the mobile app. The statements are not nearly as nice as the previous statements. And the mobile app does not work properly. When we go into statements and the month of the statement we wish to print THEY DO NOT PRINT OUT from the mobile app. We now need to go into the internet site to be able to print out our statements. Why should we have to keep doing this every month? Why does the mobile app not allow the black credit card statements to be printed out from the mobile app? See Ref no 4 7 2 6 6 5 9.