How do I talk with Lightroom Classic support by phone? I have a complex problem not being able to print larger than 17 x 20 on a Canon Pro-1000. Over two days, I spent 5 1/2 hours with three Canon support technicians. I have also spent 1 hour with two Apple Senior Advisors. They have both convinced me the problem probably lies with Adobe. It is a complex issue and it doesn't lend itself to chatting.
The first time I contacted Adobe, the technician just stopped the chat with no reason. The seconed time, after answering the technician's first question I was put on hold. After 1/2 hour I asked if I could get a wait time estimate. Two and a half hours later, I am still waiting.
To make a living, I need to be able to print. And I can't.
Do other apps print normally on larger paper? If I were you I would export to a rightly sized tiff and print from Photoshop or even preview. I don't know how to fix the problem you are referring to but if your business depends on it, printing from a different app would be a workaround.