> For example in UK your passport application will be rejected if you were not in the country 5 years ago from the exact date the application is recieved by the Home Office. You could pay all fees, taxes, pass all tests, live in country for 20 years, but if you left for one day on Sept 1 2015 and post delivered your application on Sept 1 2020, your application will be denied.

UK rules often seem arbitrary or deliberately trying to trap people.

> The rules change all the time and there isn't an 'immigrant newletter - what will fuck you up at the next step'.

That surprises me: I would imagine there are online forums, maybe a subreddit, for such a purpose.