"There is no Email Attachment Temp folder"
You can send Quotes directly via email using the "Attach File" button. This function uses the documents folder "EmailAttachmentTemp".
Someone might have accidentally deleted the folder, if I do so, I can use this function anymore as it's not possible to attach files/documents to the email. You also can't manually recreate this folder, as the function expects a prefix, which is only part of the managed package.
Use a fallback folder with the following API name: "ADvendioEmailAttachmentTemp" and make it accessible for all users.