I am not able to call only one specific contact on WhatsApp via call or Video call but my message has been sent and receive please help me with this issue

Hello,

Please try uninstalling and reinstalling the app, if the issue persists consider deleting the contact and re-adding, for more troubleshooting contact the developer following the steps in this article How to contact an app developer - Apple Support

margi288 wrote:

I have tried this but again it’s not connecting if I try to cl it shows unavailable and this happens for only one specific person contact only

Again, contact WhatsApp Support. This is their app, and their issue.

Contact WhatsApp support.