The GPLv3 states that you need to show us that you run our software and then we can send you the source code. We do not have to make the source code public.
If you would like the source code, send us that you are running our software and share your contact details.
I've never heard of a GPLv3 requirement to run it(if there is one please point me to the specific line in the GPLv3 license), GPLv3 requirements are based on distribution of the software(ie downloading it) not running it. You can contact me via PM.
Here's proof I downloaded it:
$ shasum -a 256 Dollemizer875-USA.gz
ee4386b018901799c205788bf0fb15db21b1599e4c4bf3a0d2e6abdd1d618d7e Dollemizer875-USA.gz