FNB App malfunction

I've been experiencing problems with the mobile app not being able to load beneficiaries. I spent over 40mins on the line with a technician who insisted it's a network issue despite the network working for all other application. After trying over and over again I discovered that the issue is being caused by the FNB app. If you minimise to check email etc at any point then it just hangs indefinitely. The FNB app has become so glitchy recently that it is actually a pain to use.