Steinberg Activation Manager won't start

[Abd_Alkadir_Abd_Alla]

can you please help me

Browser doesn't open for sign in, Activation Manager

I have purchased the updated version 12 of the Cubase I’ve been trying hard since yesterday to log in on the but I couldn’t log in I tried all the solutions on the internet, I changed the version of Windows i try it in windows 10 21H2 and windows 11 21H2 but nothing change my exatly problem is when i click on sign in buttom did’t open any defult browser and i cant sign in Please send the solution quickly Thank you