iMac 27" display panel + controller board shows flipped image

Greetings!

I received an iMac 27” converted to a standalone monitor (all internals stripped + a controller added for the display) and it worked perfectly for about 2 weeks. It suddenly flipped the image vertically (top is now bottom).

Do you know what’s going on, or if I should be worried? The details the controller shows are:

• RTD2785T
• FW: Para V001 20180420
• CHKSM 3EEA
• PNL: LM270WQ1 SDFG
• DP OK
• XXX 2016 14
• SIZE: 27 INCH
• 2560X1440
• CHKSUM: 71
• HDMI OK
• RTK 2015 25
• SIZE: 27 INCH
• 2560X1440
• CHKSUM: 97
• DVI OK
• XXX 2016 14
• SIZE: 27 INCH
• 2560X1440
• CHKSUM: 94

Here is how the controller started showing the notifications right after it flipped:

I was able to go to my OS settings and flip the image 180 degrees so that I can actually see it the proper way, but the controller still shows all hardware notifications flipped.