If your password contains “special” characters (anything outside a-Z, 0-9), then this bug should have been fixed by v4.3.2.2 (cf. Accents in user data fields crash the webadmin · Issue #1925 · YunoHost/issues · GitHub and Logging in via API not working anymore after update - "missing credentials parameter").
latest is not enough, your request for support needs to be future-proof. 
Please check your version number via the CLI. (sudo yunohost -v) Let us know if you are actually up-to-date, we may have actually not fixed it. 