Not able to type characters in VirtualBox VM while using Assist

Not able to type characters in VirtualBox VM while using Assist

I am connected to a machine using Zoho Assist, and I have a Windows 7 VM up in VirtualBox.  Yesterday I was able to type a character into (for example) Notepad, but once I entered that first character, every other character I typed outputted that same first character.  Now today I am unable to type in any characters.  Everything I type does not output to the screen.  I have tried rebooting the VM and also the host machine that I am connecting to.