We did not receive a confirmation link, we checked the spam box. Only the requests for documents described above and the emails informing us of the rejection without any explanation.
I think the idea behind the service is good, since development on the Windows platform requires a cost and effort to maintain certificates for Authenticode that does not exist on other platforms. However, the current validation process, with no clear answers and rejections without explanation, is not working well.
For now, we'll try other options. In any case, I thank you for your attention.