Dear @koushik
The message clear states that the Account is Not Allowed to trade.
Our Customer Service team has already informed you over Twitter, Chat and otherwise as well that your account is not activated and this was because of CDSL / CVL systems are down for all users in India and hence there is a delay. The issue at CDSL is known across the industry and is well reported in media as well.
TradingView integration works absolutely well, thousands of users are using this as we speak. Our team has shared a working screenshot above and also other users in the community has spoke about this.
Our sincere request you to refer Dhan community guidelines: Welcome to Dhan community!
Also, your account just got activated by CDSL few moments back. You may trade now.