Hi @kaniwriter,
You can get your App URL clicking the Share button on your top right corner! : How to show my app to others without upgrading - #2 by dilon_perera
You can add the share action to a button and add the Url there to share the Url via WhatsApp!
Or you can use the external link action like this : Share to WhatsApp button on Adalo - YouTube ( made by Nathan )
And also there’s a component made Pragmaflow for this feature! Check it here : Sharing user content on Social Media
For Deep Links like open this page is not possible as far as I’m aware for PWA. Possible with Native with this component : Deep Linking in Adalo (well, deep-ish linking)
But for PWA you can do something like this with Arbitrary JavaScript component made by Pragmaflow : Direct links to products or websites - #4 by Flawless ( posted by Flawless )
And I guess that you can use the Arbitrary JavaScript component made by Pragmaflow and get that screen URL and add that Url on the action too : Specific URL with QR for PWA - #9 by Ninline ( posted by Nathan - @Ninline )
Hope this helps!
Thank you