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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Don't trust the wallet balances shown in the company website, the ₿ you deposited is being sent out somewhere else. And whenever you withdraw money, you're actually withdrawing money from an account of another customer. You can confirm this by simply creating a watch-only wallet with the address they give you, you can do this easily with bluewallet. This means that the company might not have enough ₿ when you want to withdraw if a lot of customers are withdrawing at the same time.