Can’t make mod TLS to work on ProFTPD (Ubuntu 24.04)

I am currently migrating a ProFTPd (with mod SQL) FTP server from Ubuntu 20.04 to Ubuntu 24.04
I have installed it successfully and tried to activate mod_tls.c
But when I do all login fails (530 Login incorrect). Actually, I don’t think that tls is working at all.

here are my settings:
In proftpd.conf Include /etc/proftpd/tls.conf is uncommented

tls.conf:

<IfModule mod_tls.c>
                TLSEngine                                       on
                TLSProtocol                                     SSLv23
                TLSCipherSuite                          AES128+EECDH:AES128+EDH
                TLSOptions                                      NoCertRequest AllowClientRenegotiations

                TLSRSACertificateFile           /etc/letsencrypt/live/domain/cert.pem
                TLSRSACertificateKeyFile        /etc/letsencrypt/live/domain/privkey.pem
                TLSCACertificateFile            /etc/letsencrypt/live/domain/chain.pem

                TLSVerifyClient                         off
                RequireValidShell                       no
                TLSOptions                                      NoSessionReuseRequired
</IfModule>

in modules.conf
LoadModule mod_tls.c is uncommented

Thanks in advance