Here's a quote of a previous post I prepared to help folks with some of the issues I encountered simultaneously such as yourself.
No. However Stardock is working on this in case you wish to download directly from them. Recently as you might know things were not properly registering. Here's a preview/dev journal on it https://forums.galciv2.com/413462
Gamestop aquired Impulse a while back and bought it from Stardock this just recently passed spring.
These topics might help you
Topic 1# (replies linked) I'd go with reply #9 and reply #50 and if you have the same problem as I did...
Then try reading this (reply #4 of Topic 2 I'm mentioning)
You're welcome and happy gaming, hope this works for you
This might work for you <click) as it's the same link as the last one in the quote and explains my process of the other above 2 links.