The first is that your profile appears as an app. If there is data in Google Spread, such as name, age, contact information, address, it will appear immediately. Is there a way to link the above data from other sites?
The second question is, if the link is not working, do I have to input it in Google Spread repeatedly to get the profile?
What specific site are you talking about here? Whatever site you use, you still have to find a way to get those fields to your data, either straight to your Google Sheet or via an Experimental Column + API.