So far, I have always accessed my annual supporting documents generated by Spuerkeess directly in my e-documents in S-Net in the “Certificates and taxation” folder. Will this change?

Whether or not you use your tax safe deposit box, the certificates issued by Spuerkeess will be available as usual in the 
“Certificates and taxation” folder in your e-documents in S-Net.
Starting in 2022, the certificates generated will be available in both places.