If You are unable to connect Your Outlook account to Traffit please double check if Your acount uses 2 step verification process to sign in.
You can quickly check it by loggin in to Your Microsoft Account and goint to My account > Update Your security options> Update section:
If You see this option turned on You will need to generate an unique password to connect Your Outlook to Traffit. You can do this according to this gudie:
I will quickly guide You though through the process:
Please go to Update my security options
Please go to More Security Options> App passwords> Create a new app password
Now. Get back to Your Traffit. Please go Your profile settings and choose add mailbox.
Choose IMAP and copy the uniqe password here:
Please enter default settings for Outlook mailbox integration here:
Now just select Your folders and finish the process:
*please note that this workaround was tested only on office365 account and process can be a bit different for other Outlook versions