Link to new item form using Power app

Hi!

I have a list for which the form (new / edit) was customized with Power Apps.

This works OK if we edit an existing item or select New from the list main page.

However, if we browse to https://oursharepointsite/Lists/MyList/newform.aspx

we get a default form instead of the power app form. This happens only for this specific list on our site.

How can I get a link to the PowerApp form for this list?