At least 12 characters. A short sentence you'll remember works well. Don't reuse your email password.
In Google Authenticator, Microsoft Authenticator or Authy, tap + and scan this:
Can't scan? Choose "Enter a setup key" and type: KZQU Y2KS PBMC MA6R 5K7Q KXQN ORZQ 47OU
KZQU Y2KS PBMC MA6R 5K7Q KXQN ORZQ 47OU
On the Mac: Kira โ Settings โ Backups โ Download a copy of my data. Choose that file here. Everything comes across: contacts, deals, emails, sequences, settings and Muse's key.