Invalid Number in Url Link

Hi

I am from South Africa and my number is 0834450940.
Users are getting the above error….

How do i Know from my side if it works?

When I enter 834450940 I get the wahtsapp page where one needs to hold your phone to share. It does the same for 0834450940. Seems like the “0” is irrelevant.

I know for SA it must be +27 or 27.

Can you please guide me in the right direction.

Thanks

The page I need help with: [log in to see the link]