Hello,
I am watching the screen of my iPad as I type this. 'Synchronizing...' was showing for about three minutes, and then changed to 'Couldn't connect to Wi-Fi Server. Make sure that server is running and you are connected to same network'. My iPad is on my desk, less than two feet from my Mac Mini. On the Mini's monitor, I am looking at Enpass v6.11.4, which I downloaded from your website. My iPad is also running v6.11.4, also from your website.
I also have my wife's iPad. It is also running v6.11.4, downloaded from your website. It was showing 'Synchronizing...' for a few minutes and then changed to the same error message.
If I delete the Enpass app from both iPads, then reinstall from your website, Sync will work just fine for a day or two, but that's it.
My Mac Mini is new and using M2 Pro chip, and OS 15.1
My iPad Air is 5th gen. and running IOS 18.1
My wife's iPad mini is 6th gen and running IOS 17.6.1