Hey there @Herlehos! Welcome back to the community! If I’m correct I believe twitter’s API is a REST api so it should be relatively easy to setup once you get accustomed to using APIs. The VaRest plugin makes it a bit easier to call REST api’s from UE. I’ve also got a video to help you get a bit more accustomed to calling an external API but it’s for an AI voice thing, not specifically twitter, you’ll still need to learn what you need to connect on twitter’s side.
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As for the image saving, this thread might help you out:
Hopefully this will help you out!