Trouble subscribing - Lemmy.world

I have been using three Jerboa app, and just downloaded Thunder to give it a go. I like it so far so but I can’t subscribe to new communities. I assume it’s the tick button up the top, but it doesn’t have an effect when I press it. Please let me know if I’m not doing it correctly, or if there’s a fix. Thanks!

What is something you thought you had discovered or invented, but it turned out to have already existed? - Lemmy.world

What foods do you enjoy because of the texture rather than flavour? - Lemmy.world

I love anything squishy like a marshmallow, chalky like musk pencils, or really gummy chewy like Haribo gummy bears.