Flashing Euro Windows (no nailing fin) & fix Tyvek? – GreenBuildingAdvisor

I’ve been reading the Q & A and watched some Matt Risinger videos so I’m coming up against a lot of differences with the contractors we have been working with. Trying to do things as properly as possible without being too nitpicky. That being said, I have 2 issues (currently) to address. For clarity, I am being the GC and have hired trades that were (mostly) referred to me. I am in Southern Ontario.

Tyvek – was stapled and very close to the door/window frames and the bottom. 1a) should I tape all the staples to help with water b) when the flashing was added it wasn’t sliced, they just pushed it up to get it in there. Now it’s all torn. Should I tape across that whole section as well or just leave it since metal trim will go under and it will get retaped? I have some 2″ 3M 8067 on hand.

Windows have no nail fin and trying to determine how to flash them. They put zip tape around the interior (not shingled but too late) so focusing on the exterior now and how to mitigate any water from getting in. Also do I/they cut down all that foam once it’s set?  We are doing a metal vertical board and batten siding.

Any advice would be appreciated!