Cannot setup sync (v2)

### Describe your issue

I'm trying to setup sync with a local taskserver running on a rpi. The server works just fine (tested with 2 laptops), but if I go into the app settings and add certificates and taskrc file (a copy of the one I use on the laptop, without `taskd.certificate`, `taskd.key` and `taskd.ca`), I get all green ticks but at the bottom the popup says "Please setup your TaskServer"

### Steps to reproduce

1. Go to Menu
2. Profile -> Manage selected profile -> Configure Taskserver
3. Add `taskrc` (as explained above)
4. `Configure Server Certificate` set to `ca.cert.pem`
5. `Configure your certificate` set to `first_last.cert.pem`
6. `Configure your key` set to `first_last.key.pem`
7. Press the lightning (?) icon in the top right corner
8. All green ticks
9. Popup at the bottom of the screen says "Please setup your TaskServer"

### What was the expected result?

Taskserver correctly setup and sync enabled

### Put here any screenshots or videos (optional)

_No response_

### How can we contact you (optional)

_No response_

### Would you like to work on this issue?

None

### By submitting this issue, I have confirmed that:

- [x] I have starred the repo ⭐ and watched 👀 it on GitHub and followed the contribution guidelines.

Reproduce the issue through Menu > Profile > Manage selected profile > Configure Taskserver using the listed taskrc and certificate files. Trace why the configuration shows green checks but still reports “Please setup your TaskServer”; done means the taskserver is accepted and sync is enabled.

Written by the indexing model from the issue text.