Hello,
I understand you are observing the quota error while trying to create the windows VM with GPU and it mentioned your limit is 0.0. Upon that when you upgrade your account do you mean you have upgraded from free trial to paid one?
Furthermore, you tried to increase the GPU quota from 0 to 1 and the request is denied. So I can suggest you to contact sales with the help of the Link, to increase your GPU quota.
Also, you can reply to the email you have received from the quota team to get in touch with them.
If your project is under a free trial program, you can't add GPUs to your VM instances or can't request a quota increase. It is a limitation under the free trial you can find under the 'Program coverage' section of the free trial documentation.