Just downloaded my Twitter archive again and converted it to Markdown, including high-res images this time. I suggest you do the same if you want a backup of your data that is independent of Twitter’s servers and free from obfuscated t.co links.

Here’s a quick how-to:
https://matthiasott.com/notes/converting-your-twitter-archive-to-markdown

Converting Your Twitter Archive to Markdown · Matthias Ott – User Experience Designer

Matthias Ott is an independent user experience designer and developer from Stuttgart, Germany. Besides design practice he teaches Interface Prototyping at the Muthesius Academy of Fine Arts and Design, Kiel.

Matthias Ott – User Experience Designer
@matthiasott @Leneux That reminds me: I asked for my Twitter data last Friday and it still isn't ready! I guess that's the problem with having an account since 2007 and trying to get all the data while everyone else is doing the same
@edaross @matthiasott yeah I did mine a couple of weeks ago, been easing back since so not worried about losing anything since.