ODK collect Hardcode Server URL

1. What is the problem? Be very detailed.
How to Hardcode UrL in the odk collect App? user to only enter user id and password or use QR Code

2. What app or server are you using and on what device and operating system? Include version numbers.
ODK collect V1.28.2 ,Android device

3. What you have you tried to fix the problem?
How to locate the default Url and edit to my URL please help
4. What steps can we take to reproduce the problem?
app install ,default odk collect app
5. Anything else we should know or have? If you have a test form or screenshots or logs, attach below.
I am newbie have only beenusing odk on Google App engine for 1yr only

Hi @Dan_Ndori
welcome to the forum! Please introduce yourself here!

Hardcoding any url in the app would require implementing changes in the code and preparing your own version of ODK Collect. If you are not a developer you would need to hire someone to do that.
It would be easier to use QR codes. If you want to do that you will need to prepare one device adding the url and all the other settings you want and then let other users to scan your code.