Blackwidow keyboard stopped working key and razer synapse bugged

Out of nowhere my T key stopped working and the keyboard doesn't obey my commands when I try to change RGB in Synapse, this is in Razer Synapse 3 and when I download 4 the T key works again, and the RGBs too, but it stays off and on every 5 seconds, I've tried everything, changing the USB port, updating drivers, resetting it to factory settings and it's still the same, any suggestions?