Haha having such a low range of max chars just makes it that much easier to brute force doesn't it?
On password length, I once had an account on Aetna that let me put whatever I want for my password, so I used a three-word passphrase that bitwarden generated for me. It ended up being like 20 chars.
Then I tried to log in with that password. Whooosies, the password input only allowed max 16 chars!
Ended up using a much less secure password because of this.
Maximum lengths like this are like a big neon sign that says:
"Hey idiot, I'm storing your password in plaintext, don't know anything about password security, and I'm also going to make you pick something you can't remember for 'security'."