A subdomain of FiveCent URL you choose cannot be changed later but you can use your own private domain name.
You will be able to upgrade or downgrade your plan after you have setup your plan.
Your Email address verification is required for billing and to cunduct business on FiveCent.
Your Email address is used to send Invoices, Order confirmations, new buyer sign up and to make payments dritectly to your bank from PayPal etc.
Your Email will be required to furnish business ownership, sales tax information and your identity.
Those accounts with fake email, not verifiable identy or without Sales Tax information are deleted without notice after 2 weeks.