Is PAD installed on your local machine and you're trying to automate something on a remote machine, or is it actually installed on the target machine?
To automate a user interface on a remote machine from your own local machine, you would first need install the "agent for virtual desktops" on the target machine. See here for reference: https://learn.microsoft.com/en-us/power-automate/desktop-flows/virtual-desktops
Note that you would need to install this on each remote machine you want to automate.
Otherwise, it would actually be recommended to have PAD installed on the target machine, as it is more flexible and powerful when it's automating the same machine that it's installed on.
If you cannot install applications on the target machines, or do not want to, for whatever reason, you could try using image recognition to just capture images and use Send keys to send keystrokes. But that is a very unstable approach, and is likely to also not work properly when used on several different machines.
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