Takealot's faulty app

When trying to login to takealots app it tells me login was successful but immediately after it says that my username and password combination is incorrect. I've tried so many times to login. I've uninstalled the app and reinstalled it but nothing works. This is extremely frustrating since I really love takealot, however over recent months I'm really not impressed. They continue to make mistakes in product information and once I receive what I've bought it's not what I was expecting, turning the product into a waste of time and money.