I've read that you can delete and restore the monerujo app without affecting the wallet data, I never tried it as I'm afraid of losing access to my wallets.
When you setup your initial and load your own monero private key and not a seed, it throws you a crazypass passphrase that it tells you to remember. I didn't write this down. Do I need this to restore my wallet? Or do i just remember my password?
Restore height
that was significantly in advance of the first transaction to your wallet?