About 2 weeks ago, QR's online checking stopped producing a usable boarding pass. I asked QR in DOH, they confirmed the change but didn't know why this has happened.

I take it I'm not the only person?

The PDF I now receive, reads as follows:

"Online check-in confirmation
You have successfully checked in your flight. This is not a boarding pass.

Name: ....
Flight details: ....
Seating: ....
Booking reference: ....
Ticket number: ....
Status: Checked-in
Some other details too

Dear Customer,
Thank you for choosing to fly Qatar Airways.

Due to mandatory document checks, pls proceed to the Fast Bag Drop counter(s) no later than 90 mins before your scheduled departure time. Our check-in agent(s) will provide you with a boarding pass for travel.

We appreciate your cooperation and value your business."