UI Page Won't Load

We cannot access the ui page for our node-red flows. In experimenting with various methods of trouble shooting, the port :1880 was changed to :1881. When accessing 192.168.0.81:1881 to get to the general node-red flow page, we log in once at the login screen, it works, and then brings us to the main screen. Every time this page is refreshed, we do not need to log back in on the main page but a pop up comes down from the top (see attached screenshot for example of pop up). On this page, if we hit cancel it goes away and we can operate fine. If we try to input our username and password it just pops back up.

When trying to access 192.168.0.81:1881/ui , the same pop up screen appears and still doesn't work when typing in username and password, but when we hit cancel, the page just says "Unauthorized." (see screenshots attached).

Node-Red Version v1.2.1
Node.js version v12.19.0
Linux 5.4.51-v7l+ arm LE
Loading palette nodes
Worldmap version 2.5.4
Dashboard version 2.23.4 started at /ui
Settings file: /home/pi/.node-red/settings.js
HTTP Static: /home/pi/.node-red/public (This location is also missing from our directory)
Context store: 'default' [module=memory]
User directory: /home/pi/.node-red
Projects disabled: editorTheme.projects.enabled=False
Flows file: /home/pi/.node-red/flows.json