By my experience, DAS seems to be left unfinished.
First and Foremost, the “send email” link on the design approval postings doesn’t do anything. There isn’t even a hyperlink attached to the link, the link is empty. there is no link to copy when right-clicking.
Also, the approval button does nothing. It comes up asking for the digital signature, and you click “submit” to no avail. nothing changes, nothing happens, save for the Signature field losing focus.
I have tried setting up the SMTP settings and resetting them to default.