whatsapp widget

i want to embed the whatsapp widget like here https://snipboard.io/16xdVU.jpg

I saw that i can do it with this widget which seems to be free https://elfsight.com/whatsapp-chat-widget/wordpress/?utm_source=google&utm_medium=cpc&utm_campaign=%5BAPP%5D_WhatsApp_Chat_(dsa_auto-conv)(Hi_conv_region)%5BPMax%5D&gclid=CjwKCAiA0syqBhBxEiwAeNx9NxvaAJZUfELXCU9FBu0fCfpuNZ5-7KFwQCarVOYEYIrnCLXevIOsUhoCHGcQAvD_BwE

is it a good recommendation?