Why don’t you use third party app “Dynawrite” ?
Dynawrite is made by Japanese team and it is specialized for adding new item to Dynalist.
Dynawrite has a section for editing item and add the item to Dynalist from there.
There are it’s own bookmark and you can add the item to the bookmarked item as a child item.
You can also add the item to the top or bottom of the child item list as child items of the parent item registered as bookmark.
This mean that you can add your item to anywhere you want.
You can add item with note and some child items.
You can see Dynalist on this app , so you can edit your item after you send the item.
Dynawrite has been already introduced on other topic on Dynalist Forum.
Dynawrite is released
Quick send to multiple locations on android
Dynawrite has already launched for iOS and Android.
iOS
Android
This is developer’s web site.
MARUMI BLOG
I have used this app over one year.
It has many other useful features and it is very convenience.
Basically you can use this app for free.
Give it a try. You have nothing to lose. 