Nitroflare is under DDOS attack.
The 'Plugin Outdated' comes from their protection, see
https://board.jdownloader.org/showth...ght=nitroflare
Cloudflare/RecaptchaV2 requires Browser Dialog enabled in Settings-Captcha!
At the moment there exists no Browser-Extension for InternetExplorer because they do not yet support web-extensions.
I'm sorry but for this kind of RecaptchaV2 the Extension is required, else you won't be able to answer the RecaptchaV2. I suggest to install Chrome/Firefox (portable), there you install the Browser Extension and setup JDownloader to use this Browser instead of IE