The scenario you describe is impossible. This is my own personal laptop, I purchased it new and there has never been another user. I purchased Archicad 14 brand new and installed it myself. This is some sort of bug within Archicad and the question is how to fix it.
Dave Brach/architect
AC26 MBP OS Ventura
AMD Radeon Pro 5300M 4 GB
Intel UHD Graphics 630 1536 MB