I run a plotting/visualization library. Instead of a time-limited trial, we have just one of the plot types (Sankey) freely available indefinitely (https://plo

I run a plotting/visualization library. Instead of a time-limited trial, we have just one of the plot types (Sankey) freely available indefinitely (https://plotapi.com/page/sankey/ https://plotapi.com/page/sankey/). We tried a time-limited trial, and we just ended up with people re-registering new accounts every 2 weeks.