You can upgrade your plan here at any time.
Or you can follow these steps in the tool:
Settings > Payment Settings > Change Subscription Plan > Choose plan > Continue to payment > Confirm subscription
In the end, you will be able to choose whether you want to switch to a new plan right away, or after your current plan expires. If you choose to start with the new plan right away, the price will be proportionate to the remaining days of your current plan.
If you need more assistance, contact us through the chat button in the tool or at firstname.lastname@example.org