ActivityStarter cannot open Whatapp

[Numan74]

Following blocks couldnt open Whatsapp.

Error 601: No corresponding activity was found.

Does anyone have an opinion on this matter?

[TIMAI2]

For starters, these two properties are deprecated and should not be used

Use the Extras property block instead with a list of lists.

[Numan74]

I tried this:

but same..

[TIMAI2]

Will this do what you want ?

[Numan74]

Sorry for late response.
only a predetermined message text. User will choose chat or contact when whatsapp started.

[TIMAI2]

Try with just https://wa.me/ as the datauri

or with blanks for number and text

edit:

This seems to work...opens up the contact list, you select the contact, then it opens up with the text set in the message area.

FWIW, you can also do the same with Signal (but without the message)