Two Grey Ticks On Whatsapp. One grey tick means the message has been delivered to the server and two grey ticks mean the message has been delivered to the recipients phone. It seems quite unlikely though that the person hasnt used the phone since then.
The message is now on their smartphone. When sending a message to someone on WhatsApp you will have noticed that the sending of the message is quickly followed by one grey tick also known as a checkmark. Assuming that you have GBWhatsApp or have downloaded it and set it up.
Two grey ticks means that the message has been delivered successfully to the recipients phone.
The 2 grey ticks mean that they havent read your message yet. The message is now on their smartphone. Last seen- You will not be able to see the last seen of the person you are trying to connect with if you have been blocked. 2 grey ticks just means that the recipient has received your whatsapp and has received a notification on hisher phone.