When I share the link to a form we have deployed via WhatsApp, rather than showing the title of the form itsel in the link preview that WhatsApp creates, it shows a generic title.
Welcome to the community @cdparra! Despite the fact that you are not able to view the title in the WhatsApp does the link load appropriately while pressing the link (i.e. are you able to land to the correct survey page through the link that you get from the WhatsApp)?
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.