If you’d like to re-subscribe to someone you’ve previously unsubscribed from, just follow these steps:
Access Account Settings: Click on your account icon, located in the upper right corner of the screen and select "Settings".
Go to Subscriptions: In the settings menu, find the "Subscriptions" option on the right side of the screen and click on it.
View Your Subscriptions: In the "Paid Subscriptions" section, you’ll see a list of all the subscriptions you’re currently subscribed to and expired ones.
Renew Subscription: If your subscription has expired, you’ll see this subscription in the "Archive" block and a "Renew" button next this subscription. Simply click on this button to reactivate your subscription and continue enjoying the content.
Your subscription will be reinstated immediately, and you’ll start receiving their updates again.
You also can see "Renew" button next to the existing subscription with expiring date below, by clicking on it you will expand your subscription.