Hey @ketan23 are you using HubSpot cookies on your site? Do you have any extensions or pop-ups which might block a cookie being dropped? Such as a privacy policy or third party privacy policy app?
My guess here is that no HubSpot cookie is being dropped so the chat widget has no way of recognising who the visitor is when the page is refreshed?
Tom Mahon Technical Consultant | Solutions Engineer | Community Champion Baskey Digitial