Qatar App and Website not working for two months.

For months now Qatar airways phone app and website not working properly. Often doesnt allow online check in, unable to purchase pre flight on board wi-fi, after paying for leg room seats wont allow to review or change seats, some bookings when pulled through to Al Maha services dont group inbound and outbound flights together so cant book the service. Often when trying to manage booking it asks to update contact details then says error try again later but just never works again for that booking. Absolutely terrible system and service. Logging help requests are met with standard responses and no fixing of the problem. Have started to use other airlines.