I am awaiting more feedback from the end user, via an intermediary.
Below is the browser loading the pdf file (it stalled)

and here is the screenshot (all I have for now) of the floating toolbar over a loaded pdf file.

The toolbar does not look anything like that for me in Edge or Chrome on Windows 10, I am trying to establish the OS/Browser/PDF plugin being used. Does the pdf toolbar look familiar to anyone?
Below is the browser loading the pdf file (it stalled)

and here is the screenshot (all I have for now) of the floating toolbar over a loaded pdf file.
The toolbar does not look anything like that for me in Edge or Chrome on Windows 10, I am trying to establish the OS/Browser/PDF plugin being used. Does the pdf toolbar look familiar to anyone?