As long as the desired plans are available, you can choose to upgrade your account. To do that, you just need to go to our pricing page here: https://www.securiwiser.com/pricing and pick your plan.
Upgrading monthly subscriptions: they will be prorated (charged only the difference), and for the coming months, the new full amount according to the plan chosen
If you need any further clarification or want to make suggestions, please reach out to us at support@securiwiser.com, we love hearing from our community!