on my first attempt with EX200 i was wondering that copy/paste on VM1 and VM2 are not working.
Is this a Hint,or works this as designed, because i had althougt to rebuild VM1 at the Beginning of the Exam (no login possible)
copy and paste are disabled inside the terminal. I had the same issue especialy when trying to modify fstab.
i used the following to avoid copying the UUID for example.
lsblk --output=UUID /dev/vdb1 >> /etc/fstab and than i edit fstab to finish the work. maybe this can help