Testing Edge browser with Outlook mail.

Issue 1.
After clicking on Outlook Mail from Edge the OM register/sign on screen appears. Clicking on sign in takes me directly to mail. All other times clicking on OM from Edge sends me directly to mail. How can I get OM from going to its register/sign on screen? FYI, Outlook is selected as default email for W10.

Issue 2.
OM does not sync. All in-box emails do not appear.

Issue 3.
I have a folder entailed Tools. Not all emails sent to this folder from my iPad Air appear yet they are in the Tools folder in the iPad Air 2.