I'd like to upgrade my monthly subscription

You can upgrade your subscription by purchasing a higher one (monthly or annual). Any remaining days of your current plan will be converted into days on the higher level in accordance with the price ratio and will be added to a new subscription extending it.

Example:

• You have a monthly Essential subscription (26 days left).
• You upgrade the plan to the Plus level on a monthly basis. The new Plus subscription is purchased immediately. 
• All Essential days are converted into days on the Plus tier and added to your new Plus plan. 
• Your new Plus subscription will be auto-renewed, and you will be charged again upon expiration of this period.

If your subscription was purchased via a mobile store, please refer here.