Enter your license plate to see whether your vignette is registered and its validity dates.
A vignette that starts in several days is sent to the authority automatically, a few hours before it starts. Until then, the official website does not show it: this is normal. In Switzerland, the official website only shows an e-vignette if it was made public at purchase.
For a vignette that starts right away, registration usually takes less than 5 minutes. You then receive a confirmation email.
The vignette is digital: it is linked to your license plate, there is nothing to stick on the windscreen. Just make sure the registered plate exactly matches your vehicle's.