Answered question
Trying to add a contact to my profile. System cannot find the Fizz contact who actually invited me to Fizz!
There are 2 possibilities.
Either your contact is in private/incognito mode
or has already deactivated from Fizz.
If you know the number, you can try calling to check.
Other answers
He might be in the ghost status. He doesnt want to be find!
I believe that your contact must change the privacy setting to Full experience
You can add yourself as a contact to your profile.
Those are the possible status!