Login not working

### ⚠️ Before posting ⚠️

- [x] This is a **bug**, not a question or an enhancement.
- [x] I've [searched for similar issues](https://github.com/nextcloud/android/issues) and didn't find a duplicate.
- [x] I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
- [x] I agree to follow Nextcloud's [Code of Conduct](https://nextcloud.com/contribute/code-of-conduct/).

### Steps to reproduce

Nextcloud used to work fine on my Android. A few days ago, I logged out (or in the app's term, deleted account info) for reasons unrelated. Today I wanted to connect again, but it's just not possible: Nextcloud app forwards me to the browser, I enter my credentials and give permissions until the browser window tells me that everything should be fine. But when I return to the nextcloud app, I'm returned to the page where I need to enter the server name.

### Expected behaviour

Tried this multiple times, tried different browsers, updated to the newest Fdroid version, reinstalled, explicitly erased cache and user data. Also updated the Nextcloud server - always same result.

### Actual behaviour

Connecting with the Nextcloud cookbook app (it connects directly and doesn't rely on the Nextcloud main app) works just fine, so at this point I'm assuming the issue is with the Nextcloud Android app.

### Android version

11

### Device brand and model

Galaxy S5

### Stock or custom OS?

Custom (explain in "additional information")

### Nextcloud android app version

3.30.7

### Nextcloud server version

29.0.11

### Using a reverse proxy?

I don't know

### Android logs

_No response_

### Server error logs

```bash

```

### Additional information

_No response_