I just accidentally figured out how to access TRP on the app.

I was editing an asktrp comment when I opened safari on my iPhone. I opened a TRP post and clicked ‘visit community’ example

This then loads the TRP subreddit behind the comment you are editing. The fact you are editing the comment disregards and discards the ‘quarantine warning’ that prevents access.

After finishing editing the comment you have the TRP subreddit loaded.

This process could probably be simplified into a single link somehow.