I tried it too and got some problems with downloads.
What I did.
1) rename "downloads"-folder itn laztoapk to fe "test"
2) Normaly, while installing laztoapk next zips are donwloaded, but some of them aren't.
So search for them on the internet, download the zips to "test" and rename them to the name required from laztoapk. namely
- laz4android.7z
- gradle.zip
- ndk.zip
- sdk.zip
- apache-ant.zip
3) Uninstall laztoapk
4) rename "test" to "downloads"
5) Run setup laztoapk again. You'll see that no downloads are no more done, the zip-files are already available in the downloads-folder