What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
When a user upgrades to a paid plan, there are no Jotform links that will be removed or changed. Forms will stay as it is. When user upgrades to a paid plan, it will only increase the limit of every features in Jotform.
If you have other questions, please feel free to ask.
By the way, if by "JotForm links" you mean the "Powered by JotForm" at the footer, yes it will be removed once you upgrade to a paid plan.