I’m migrating my google stats to piwik. It seems it does nothing after requesting all visits. What to do next. I’m using piwik 1.12
Maybe wait for few minutes as it may finish after a while ?
I waited 4 hours nothing happened.
Umh, maybe the script has a bug. Please create a ticket if you can, with as much info as possible 
Regarding Google2Piwik tool: unfortunately it is currently not supported anymore. We are planning to officially stop supporting the tool and then create a new much improved Google Analytics data importer.
I created following tickets to make this plan happen sometimes over next few months:
Deprecate Google2Piwik -> Deprecate Google2Piwik · Issue #6096 · matomo-org/matomo · GitHub
Create an API to let users import historical report data in Piwik -> Create an API to let users import historical report data in Piwik · Issue #6094 · matomo-org/matomo · GitHub
Let users import Google Analytics data in Piwik -> Let users import Google Analytics data in Piwik · Issue #6095 · matomo-org/matomo · GitHub
(later we would then be able to write other data importers from other tools or platforms!)
Feel free to comment in any of these tickets.