Can you make sure that “long press OpenEUICC icon > App Info > Notifications” are enabled? IN addition, I don’t know if relevant but in App Info is “Open by default” set to “in the app”?
I am not sure those are relevant to check, but not sure what else to suggest. Maybe send a screenshot (obscure any private info) of the failure?
In addition, there is this thread today not on activation issues, but on data issues with an eSIM in a Pixel.
Also there is this older one related to a Pixel8 and eSIM: