Perhaps https://noai.duckduckgo.com/ or even https://lite.duckduckgo.com/ would be less annoying.
1.1.1.1 does no filtering. 9.9.9.9 does, similar to 1.1.1.2. To skip filtering use 9.9.9.10.
Anything will work as long as you encrypt first.
Hell I've seen 30 days. Sometimes they are using a third-party - it still should be almost immediate these days.
Fraud. It takes a while for them to receive the funds even though they are charged against your account almost instantly.
I expect they think that a significant percentage of people that have Internet also have a smartphone. They probably aren't far wrong.
They are: ping 0xC0.0xA8.1.1 or 0x7F.1
Standard scanf number parsing is generally used though some OSes reject that.
Your OS might be killing (outright or effectively) your app - check dontkillmyapp.com for possible solutions. Or the app doesn't have notifications enabled at the app and system level.