Inside of entry door cracked

I have a 2011 Heartland Elkridge 35QSQB 39’ bunkhouse. I noticed that after my camper had sat over the winter, that the interior panel of my entrance door had cracked in 2 places. The cracks were toward the bottom of the window running from the window to the outer sides of the door. We camped over the weekend and now another crack has developed from the lower right corner of the window to the latch area. Has anyone had this problem before? Is this repairable? And if not, does anyone know where I start looking for a new door? Thanks, Adam

Here's a link to a prior thread that might help.

Thanks for the link. This is exactly what my door looks like...location and all. Sounds like I should be able to replace the inner panel.