problem with seeing applications

Hi,
I'm using parallels desktop on my iMac2014.
I have a problem with the desktop.
when i launch some applications, i can't see aund use them.
for example, my application telemis (radiologist software) opens in a part of the screen (see screen capture) so that i can't use it.
in some applications, letters are very small.

Do you have a solution ?

thanks.

Thomas