Individuals showing twice

Hello,

I’m using the free version of your plugin and am an experience WP user. I’m also aware of the limitations of the free version. In my tree (which is only one branch as I know that more than one is not possible) I have individuals showing up more than once randomly in my tree which is weird to see.

I have checked the family relations three times to make sure that I did not mess up the structure that way. Can you please check as per the link I mentioned where you can see the tree wat is wrong?

Examples are Geertrui, Pieter, Adriana, Jan and Joanna on the left side.
Other than that all seems to work well.

I would love to understand whether this is a bug in the plugin or something I am doing wrong.

Note; Almost no plugins active (only basic and widly used onces) and a very generic theme (HelloElementor).

Many thanks in advance!

The page I need help with: [log in to see the link]