I had to reinstall from freezing at 91% and ended up with Y3AC8Ss+@ as my new account. My old save is called scotan – I do not have the original account name, just the renamed one. Hope that is all you need. I haven’t been able to play in over a week,
edit: I should say that I initially emailed this issue to someone at contact, and no reply came after more than a week. I then looked and saw that this is the place for support. I emailed a different ID, so if that is seen, please ignore it. Today I reinstalled again and got a new ID (above). Also this time I had the option to restore a cloud save (which wasn’t my original save) but that option wasn’t available the first time.