help ! callygraphy/penscript

hello
it seems that since 2.1.4 something has been changed in drawing

i dont see the differnce between these two new items : callygraphy and penscript
but 
both work fine with the trackpad
wheras none works with my Repaper pen + tablet (trackpad let me draw lines see picture ; wheras pen and tablet only let me draw some points)

that’s a pity because i was starting to preparing videos for my students, using the tools described here :
https://www.youtube.com/watch?v=IoYyWWIcrUA&list=PLwVXFDzLfXhc9yaw0Oy54VpBTd-wExrYD&index=4&t=7s <https://www.youtube.com/watch?v=IoYyWWIcrUA&list=PLwVXFDzLfXhc9yaw0Oy54VpBTd-wExrYD&index=4&t=7s>
and at the end of here :
https://www.youtube.com/watch?v=HTnorba0Q_s&list=PLwVXFDzLfXhc9yaw0Oy54VpBTd-wExrYD&index=5 <https://www.youtube.com/watch?v=HTnorba0Q_s&list=PLwVXFDzLfXhc9yaw0Oy54VpBTd-wExrYD&index=5>

and curiously it does not work any longer

how can i proceed ?

thanks :-)

Vincent