You may not be allowed to board at the airport. It is advisable to get the "OK to board" from your airline people because in case should you not be allowed entry by the immigration at Qatar airport for any reason, it then becomes the responsibility of the airline to take you back to your destination from where you boarded the plane. Also, when the booking is done, the airline issuing the ticket, always does its own confirmation on the visa status without which they will not confirm your booking. You should insist with the airline people to place an "OK to board" stamp on your ticket. By not doing so, they are simply avoiding their responsibility. Please note, even if someone is at the Qatar airport to receive you, he will not be able to come to the immigration counter to help you out, should their be any problems. If you still continue to face problems with your airline, go for Qatar Airways.
You may not be allowed to board at the airport. It is advisable to get the "OK to board" from your airline people because in case should you not be allowed entry by the immigration at Qatar airport for any reason, it then becomes the responsibility of the airline to take you back to your destination from where you boarded the plane. Also, when the booking is done, the airline issuing the ticket, always does its own confirmation on the visa status without which they will not confirm your booking. You should insist with the airline people to place an "OK to board" stamp on your ticket. By not doing so, they are simply avoiding their responsibility. Please note, even if someone is at the Qatar airport to receive you, he will not be able to come to the immigration counter to help you out, should their be any problems. If you still continue to face problems with your airline, go for Qatar Airways.