I'm a WooCommerce developer and I use your Wishlist Plugin.
I adapted your plugin to integrate it into my WebShop, but there is neither do_action nor apply_filter in your code so that I can add my own functionalities... So I have to rewrite your code in each update.
And your YouTube tutorials are empty, there is no videos.
Welcome to our forum.
We have recently re-write our wishlist plugin and still working for this. we will update our documentation for new version, hope you will love this. if you please share your code what are you extend then it will help us.