Hello, I am running a newly build PC with 3 Razer Devices (Firefly, DeathAdder and Black Widow)

For 2 months all Devices, lights and Synapse worked fine until 3 weeks ago I couldnt open Synapse. So I uninstalled it, deleted all remaining folders, closed everything left in task Manager and installed it. At least I tried it.

The program opened, I allowed it to run, a small window opened, but closed after a second and then nothing.

I Trier running it in Admin, with turned off firewall, restarted several times and even uninstalled the Devices and used some old Office mouse and keyboard from other companies. But it still did not helped. Please help me