Yes, you can upgrade your account at anytime. Please email us at sales@knownhost.com with your customer ID (or open a ticket with the 1)Sales Deparment) and we will take care of your request.
VPS upgrades are seamless, in-place, and require no downtime!
An extensive list of our VPS add-ons and upgrades can be found here: 2)KnownHost VPS Add Ons and Upgrades
Once your plan is upgraded you can not request a downgrade of the same plan for at least 30 days.