Can't install Flexistarter 10.5

[Can't install Flexistarter 10.5]

From a google drive link i found on the internet

[Can't install Flexistarter 10.5]

Hello!
I had a problem with the program, it disconnected, so i uninstalled flexistarter, but when i tried to install it again, my computer wasn't reading the disk, so i downloaded the same version.

My problem is that I'm not being able to install it because the "Product" field is blank, and it also says my password is wrong...

Does anyone have a solution for me????