Hello, I get OC version 184.108.40.206 and installed your extension. Everything is working fine, except ... When I am updating the extension in admin, I set up the values, click on green pipe buttom on top right and: Success: You have modified Payment Fee or Discount! When I click on blue save icon, I get this error message: You do not have a permission ... etc. Anyway, me (as an Administrator) have all the right to do that. Rights also set-up in System settings. Any idea?