iOS clients stopped working after client update to 2.12.0

Here are a couple of reasons why your iPhone might not be updating automatically overnight, even if it’s plugged in and connected to Wi-Fi. Here are some things you can try to fix it:-
1. Check Automatic Update Settings:- Make sure both “Download iOS Updates” and “Install iOS Updates” are enabled in Settings > General > Software Update > Automatic Updates.
2. Restart Your iPhone:- A simple restart can sometimes clear up software glitches. Restart your iPhone, then check for updates again.
3. Delete and Retry the Update Download:- If the update download seems stuck, try deleting it and downloading it again. Go to Settings > General > [Device name] Storage, find the update in the list, and tap “Delete Update”. Then go back to Software Update and try downloading again.
4. Check Storage Space:- Your iPhone might not have enough space to download the update. Try deleting unused apps or files to free up space.
5. Check Wi-Fi Connection:- Make sure your iPhone is connected to a strong and stable Wi-Fi network.
More details instruction below.