If a User has Pushpage Editor and Pushpage Manager, the Editor Role may be restricting the access of what you are able to send as a Pushpage Manager because the Pushpage Editor Role is the more restrictive Role. 

To add or remove access for Editors to the Template/Pushpage Issues, navigate to:
  1. onMessage > Settings > Pushpage
  2. Select Pushpage Editor Access
  3. Click Edit on the Pushpage Editor Group
  4. Under Template Access Select the Templates this Group should have access to and click >>
  5. If there are Templates they should not have access to, Select the Templates in the Right box they should not have access to and click <<
  6. Alternatively if you are a Pushpage Manager 2010 and a Pushpage Editor, you can remove the User from the Group by clicking on their name and clicking << Remove from Group