Thanks for playing and sorry to hear you had these issues. In order to plant a seed, you have to have selected the seeds before sprinting, at least one usage of the seeds left and enough energy to take an action. Then you need to right-click when you see the interaction symbol as you sprint past a patch of soil. In case you did fulfill all these conditions and it's still not working, it could be a bug. If you have any hint on how to reproduce it, I'll look into it for an update.