Big Question

So I have an account I’ve been playing on for a very long time and I’m happy with my progress. And after all this time of playing I never sync’d an email into the game to play on. I really want to sync an email but I’m scared I will lose my progress and start playing a new game on a new profile on that email.
So can you guys tell me If I lose my old progress and start fresh on a new email or if it just adds an email to old account.
Thank you

if you have a pc with steam you could install phobies there and load in your profile there too. if youre on steam the opposite on your phone. and sync it then, just to make sure

syncing on its own will not let start you over. when i synced i believe i got a e-mail with a link to click on and then it was connected. Could even “recover” my game on a phone where i had to download it fresh thatway

Thank you very much for tell me this