How do I know if the photo of my bed has been uploaded?

After clicking the upload button in the email, you will be redirected to a pCloud upload page. Below a short explanation of the photo requirements, you will see another button. 

After clicking this button, you can directly select and upload your photo or take a photo with your smartphone and upload it. The upload will take only a few seconds. When it is finished, you will still see the upload page. If it shows 100% uploaded, your photo is in the quantum network of 90.10. already. You will not get a separate notification that your upload was successful. 

You can simply close the upload page and continue with everything else.