You may contact JyotishTools via email: firstname.lastname@example.org
Make sure that email is not blocked in your spam controls. Sometimes I get the same question over and over from the same user indicating they haven’t seen replies due to spam filters.
Currently we do not offer phone support. Also our products are distributed in-directly by companies like Digital River (SWReg), Google (Google Play) and Amazon (Amazon App Store) so be sure to check their support for related issues.