@vpphplist You need to run "command line php" and your problem is knowing what that command actually is.
"php-cli" does not seem to be correct
"php" gives a warning about not being cli php
if your hosting company cannot help then you will need to use another approach, such as remote queue processing as explained in the linked manual.
Also this format of the command is no longer supported,
page=pageaction action=processqueue login=login password=password