A: Hello digitalmediavb,
you will be able to upgrade later as long as the Appsumo deal is live. Whitelabel is exclusive to Appsumo customers, if the deal will end you won't be able to purchase 3 more codes, we don't know when the deal will end so I would suggest to purchase it now.
More information on Whitelabel:
You will be able to connect your own domain name e.g. yourbrand.com/signup and place your own logo everywhere as dashboard, login, sign up etc. You will be able to bill your signed up users which means it will be copy of ContactInBio on our servers, shared database with ContactInBio but under your domain and logo. For example, yourbrand.com/page1 yourbrand.com/page2

thank you for your question🙂