Thanks for testing. And next funny thing - I forgot to uninstall APOS plugin, so it still created welcome post for you in forum, but forum is not installed... Just a reminder to look at it.
@Alex I have that free version. It is enough for me, I was just curious what cookies are used with e107. You can add new one manually too. There is similar WP plugin, I had almost e107 version too. But I needed that scan and WP version is very limited agains online solution.