Question, why has functionality been removed in 25.7?
I recently updated to the latest stable version of 25.7 and I have found that my stored credentials no longer work in any of my unattended sessions. Clicking on Manage Credentials->Send to Screen" no longer does anything, it just leaves the fields blank. And if I type in the password to connect to any of my computers or servers, it displays the dialog on the desktop asking if I'm sure I want to delete the stored credentials.
Why has the stored credentials functionality been changed in 25.7 stable?

This requires a host client update as documented here:
Prompted to delete credentials when sending credentials to screen - ConnectWise
TLDR:
This issue occurs after upgrading from 25.4.25 to 25.5.1 and then connecting to a device with previously stored credentials.
If the technician attempts to use the Send to Screen button to send the credentials to the remote machine, they are prompted to delete them instead.
Resolution
Make sure your host client is updated to match version 25.5.1