For IOS push cert needs configured
On IOS devices here are the steps involved in getting it to work - https://www.evernote.com/l/Aa0m_qSIALdBGI3HkIu8XoaVmhh7MKYPtW8/
On Android here are the steps involved in getting it to work - https://www.evernote.com/l/Aa3SHr4ibglHPLxjuDGlCbn7zU5lsj6XKLQ/