I'm a blind discord user but the app have many accessibility issues with screen readers.
Last summer, some improvements made about it but there is a long road ahead of us.
I would like to emphasize some of them.
First and for most, the iPhone app is unaccessible with voiceover. I use the app with my computer but in mobile neither me nor my friends can not use it. Any of the buttons are labeled properly, even voiceover can not detects buttons or links.
On computer the app is better but not good for Voiceover, Jaws or NVDA.
Some buttons like mute or deff are clearly labeled but most of them are unlabeled, such as emojis, adding file, opening or closing notifications, mentions ETC...
Also sliders can not detecte with voiceover, sighted person needs to use them.
As an advice, if blind testers test the betas, it will be great up for blind community for soon.
I think if yu ask to applevis.com or audiogames.net, they will be happy to help you.