Without the correct address, we may not be able to serve the lawsuit later on.
How to find the other person's address:
Phone Number. Try a reverse phone number lookup. Type the phone number into a Google Search and see what you find. You can also check with "reverse phone number lookup" companies aswell.
General Google Search. You would be surprised by what you can find on Google. Try searching their email address, old address, or previous employer. You can also check to see what you find on Linkedin (the person can be served at work) or other social media.
Hire a skip tracer. You can also hire a 3rd party to search for where the other party may have moved to but this isn’t always successful.