Can I upgrade my ON1 360 storage plan later? Nathan June 04, 2020 17:47 Updated Follow Yes, you can upgrade your storage plan amount at a prorated price. Read the ON1 360 FAQs Related articles Who is FastSpring? Getting Started with ON1 360 Why am I being charged sales tax? Frequently Asked Questions About ON1 360 Changes to ON1 Plus Pro - FAQ Comments 0 comments Article is closed for comments.