Post from iOS app

After not blogging for a while, I resumed using the iOS WordPress App (iPhone 13, iOS 16.1.2) and have a “Post fail to upload” everytime I try to publish.

I have tried the following:
– Publish a simple title and one sentence of content from the app (to make sure it isn’t an issue with uploading/publishing media), but this fails
– Publishing from a browser works fine (text and media)
– I can edit an existing post from the app (edit text, add media)
– I can create a draft in a browser, then successfully edit and publish it from the app
– I reninstalled the WP app on my phone, but it didn’t help

For now my workaround is to create a bunch of drafts in the browser, then use those in the app when I want to post, but I was wondering if this was a known issue or if there’s anything I can try to solve the problem?

Thanks in advance for any pointers