Hi @valerii9116,
Thank you for bringing this issue to our attention. After reviewing your checkout page, we noticed that you’re using Siteground Optimizer, which has optimized the JavaScript in our plugin. This optimization has introduced a SyntaxError that is causing the problem. Our plugin’s JavaScript code is already minified and doesn’t require additional optimization. Please disable the optimizer or exclude our plugin from optimization, and try again without it. If you continue to experience any issues or have further questions, please feel free to reply to this ticket.