Can we link multiple devices to sign in to the portal?

Only a single device linked to each account. If you have multiple users currently using a single user’s credentials, you will need to create each of those users as secondary SLIP+ users associated with the primary account. You can do that by going to the Settings page (found by clicking on the account holder name in the top right corner) and then User Manager. There is an icon for “Add New User” in the top right corner of that page. There you can add each secondary user that would need access to the account.