Used the apps frequently (bout once a month) and never encountered any misbookings or error.
However, did you guys notice that Direct Debit (from Maybank2u, CIMB Clicks, Hong Leong connect etc.) have gone missing from AirAsia website. Now the payment options only give you credit/debit card and AirAsia Voucher, which is silly, since even though i used my Maybankard Debit Card, AirAsia still charged me RM5 for convenient fee even though Direct Debit is not offered, which leave guests, having to pay RM 5. I'm not sure if this affected the others but when i logged on and booked flight i cannot find Direct Debit anymore (since June)