The "Accept all SSL certificates" option works for most cases, but there are unfortunately some, where it still fails (we already have a large ticket in our issue tracker of cases, where it fails :) ).
Debugging these issues and building workarounds such as the "Accept all SSL certificates" is unfortunately very time consuming, and as the Palladian nodes are a non-profit community project, my temporal priorities are on different ventures currently.
If it's important to you, I can offer two options: (1) I can give you access to the Palladian repo and you can build and contribute a bugfix yourself, (2) we're open to sponsored development, where we develop the feature for you.