Feature-rich best plugin support I've ever received

Excellent plugin, it offers so many features and capabilities, but the real star here is the support. In the past 10 days I must have submitted 15 or 20 questions seeking help from the developer, and he (or they?) answered every one of them promptly. Can’t ask for better than that.

No way I would have been able to create such a detailed, smooth-running calculator form without this plugin. I now need to decide whether to donate to the developer or upgrade to the paid version.