How do you get access codes etc from twitter post July 2018?

Hi there

I am using this on one of my sites and it has stopped working since Twitter changed the rules on getting an api etc. Their info now says “As of July 2018, you must apply for a Twitter developer account and be approved before you may create new apps. Once approved, you will be able to create new apps from developer.twitter.com.” which means the plugin instructions are out of date. Are you able to advise how we do this now? I don’t want to apply for a developer account as I am only using third party apps, which I assume must have been approved? Many thanks!