@pfefferle I found the old one “too complicated,” when I originally built this (2 or 3 years ago). Having to install two plugins, etc. Sorry!
Also believe there was something with custom post types. Selected them on the settings page but mentions would not get sent (I think …) unless I did so from a hook.
I know a lot of that has been addressed in the latest version!
In theory, both plugins are compatible and one could just choose to disable IndieBlocks’ Webmention function.