In a project after 5 months of successful communication with AMX, suddenly they can't control almost every group address of my C-BUS system. The messages they get are shown in the attached picture. 7 weeks ago I added 3 pirs and I was afraid that I made something wrong that generated too much traffic.. So I run the diagnostic tool for couple minutes and everything seems to be ok since I didn't have much traffic and 0 errors reported. Any idea of how we can fix it, please?