Welp, when exactly are you getting the issue finding program data?
I think you could try to move everything inside "ProgramData\Elder Scrolls Online\live" folder to "Documents\Elder Scrolls Online\live" EXCEPT for MachineSettings.txt.
If that doesn't work, the easy option is to reinstall again but maybe turning off Windows Defender ransomware protection? See the last post here.
https://forums.elderscrollsonline.co...longer-working