Greasy Fork

It doesn`t work, I see the text only 1 second decoded

I'm sorry, but you're doing something wrong then. I've tested it using Chrome and it works like a charm. What Browser / Addon are you using?

Unfortunately it is currently like this. Since in the paywall there is Javascript included that removes the obfuscated div elements completely from the DOM.
I managed to find a workaround, see discussion https://greasyfork.org/en/scripts/425863-waz-nrz-deobfuscator
by decoding ("de-obfuscating") the text while page is beaing loaded, then save the clear text in a variable and append it to the article container div. Additionally removes the unwanted ads (could be done with AdBlock as well)