http://sparrowa7io5pz6ud3ehqzosvepbxbxt2zphmkjsylp2zgxooko23pqd.onion/docs/faq.html
The derivation path can be set to the default for the script type (indicated in the textfield prompt) if not known. I’m getting a “man-in-the-middle” certificate warning when connecting This is an SSL error, mostly likely due to an expired certificate.
If you are using a public server, it may simply be that the certificate has been replaced, in which case it is safe to proceed.