The time gap between the policy expiration and the renewal of the policy is known as the Break-in period. Your policy will remain inactive during this period, and in case if your vehicle faces any issues, it will not be covered in the policy. No Claim Bonus (NCB) gets fortified, and the insurance company can also increase your premium for the next cycle if the policy is not renewed within the grace period of 90 days.
In the case of a break-in, you can renew your break-in policy easily online, and it gets instantly activated. A soft copy of the policy will be sent to your registered email address, and the policy will be completely active after a few days from the date of payment.