new event, custom loader & checkout step events

Hello,

I wanted to know if it’s possible to make an update and add the event add to whishlist

After,
Does GTM kit is compatible with custom loader ? ex stape.io custom loader option

And last one,
I have problem for unknown reason i don’t get the checkout events like begin checkout, add shipping info and add payment info

that’s weird. It is due to the fact i use a custom checkout ( WC Checkout )
What can u do or what can i do ?

Thanks!