For those who facing this issue, you don't have to copy the certificates every time you login.
Just copy the certificates from `~/.purple/certificates/x509/tls_peers/<servername>` to `/etc/ssl/certs/<servername>.pem`, and kill the telepathy-haze process using `pkill telepathy-haze`.
Disable and re-enable your account, and you'll login successfully.
For those who facing this issue, you don't have to copy the certificates every time you login.
Just copy the certificates from `~/.purple/ certificates/ x509/tls_ peers/< servername> ` to `/etc/ssl/ certs/< servername> .pem`, and kill the telepathy-haze process using `pkill telepathy-haze`.
Disable and re-enable your account, and you'll login successfully.