I don’t think you’ll lose anything. As long as you have it installed and you’ve backed up your nsec it shouldn’t be a problem. 

 Thanks I will try 

 Once you have the TestFlight running, the last step is to run this script and restart the app. 
https://nostrscript.suhailsaqan.com 

 I have to tap redeem then redeem code is required.  Where will I get it. https://image.nostr.build/f8ad6a1cdb452655e5ac6d701120fb13c0bd2aed149919833d543be70b29a55c.jpg