Once upon a time there was a good free plug-in…

Well, i feel terribly sorry, for you not understanding how the plugin work..
You said “page source code was almost the same as before” > the plugin changes urls. Is obviously can’t “hide” your HTML or your browser would not show anything.

The plugin does not break a thing! And the explanation is so simple, it does not save anything on database, it process everything on the fly! So ensure you clear your site cache.

That’s a shame, at least you could ask for support.

What is there not to understand how your plug-in works?
Yours is not the only plug-in I tried for that matter.
Besides, I’ve had already said it nicely that I used your plug-in earlier once,
before you stripped it down to this version I tried now.
Obviously you push your pro version, which is understandable for the sake of money.
But don’t try to belittle my knowledge and review, and rethink about your attitude towards users instead!

I gave it one more try and found my own mistake. Still a great plug-in. Sorry for my bad!

I thank you for reconsidering and give it a new try. Do let me know if i can help.
I also apologize for being rude in my response.