Hi, The heatsink that comes with the digi+ bundle is unexpectedly large. I have built a similar pi box about 4 years ago and there were 3 heatsinks.
Since there are no instructions on installing this monster it should be intuitive. Sorry, but not to me.
I received an email with a guide on installing heat sink but it is not related to the heat sink at all.
Heat sink product description: https://www.hifiberry.com/shop/accessories/heatsink-pi4/
All of the online videos I have found have multiple heat sinks, which is what I recall installing on my previous unit.
Can I get a pointer on how to properly install this sink on this board?