Rpi monitor on 2 separate pi devices not functioning

[EagleDTW]

Hi,

I have Rpi monitor on an Rpi 2B+ and on a cm4, both have stopped being able to access the monitor dashboard for past month and a half. Is there any port blocking or something else going on or has a recent update messed up communications? The Rpi monitor service is running, I’ve uninstalled and reinstalled the sw and nothing is working still - any thoughts?
Thank you, Daniel