No longer works

I have had no problems with 2x up until now, I have no idea how to fix it but it no longer fits my screen, I have to scroll, rotate, scroll and rotate over and over again to get any work done I was told by my IT department it is a issue with the app and there is nothing I can do on my end to fix this ? Is this my preferences that are set up incorrectly or is this really the apps issue? Please help.

JT 99x about Parallels Client (legacy)