I had similar problem. But i managed to overcome it by first:
- Share to email and while in the draft mode;
- Open WhatsApp, copy and paste survey title or simply type it in as desired. You can as well add any info you intend to share with the survey form
- Copy link from the email draft page and paste on WhatsApp message. Discard the email draft if not sharing via email.
- Share to as many WhatsApp recipients as desired.
Note: if you share straight from kobotoolbox to WhatasApp, the title will not display, but go through email, and you can add title and additional info about the survey.