Multiterm 2019 disappeared Windows 8

I tried to update Multiterm 2019 but the update failed and Multiterm disappeared. When I downloaded Multiterm again and tried to install it, I got a message saying I already have a higher version installed and I need to remove it to install the version I have just downloaded (see message below). When I try to remove the suite of Mutliterm products, I get the same message. I cannot repair it either. Can anyone help me? Thanks in advance. Ian