I configure in your site because your site open when i sign in your extension in my site … for free sign up. Yes, ok, so you have my mail for free now :p
So i first try create operation in your site, opertion not free.
After i create on my site, start operation and there aren’t save anything on my dropbox… So i doubt of your FULLY FREE. Sorry.
Now i have setting up a test site and… it’s OK! Nice extension.
Problem is on my site on production, perhaps too large archive? I have to continue to study this.