Users who have a native 4K resolution display can now choose the "Resolution Support" add-on for their subscription.
Please note that the 1080p Full HD option is the default resolution for all servers. If you do not have a local native resolution higher than 1900x1080, you should choose the default 1080p resolution support option.
You can purchase a Managed Server Plan with 4K addon subscription here.
You can purchase a Pay-As-You-Go Plan with 4K addon subscription here.