I'm coming back to the issue of "Access token needed" disused before in this thread.
Using Zen Cart 1.5.4 - PHP 5.4.23
Tried reinstalling module, reissuing Application Secret and Personal Access Token, to no avail. "Access token needed" doesn't go away.
I can see that "Token set. You may now continue configuring the module" message appears when trying to authorize the account, but nothing happens after.
One detail is that if I edit the module there is no Location Id (appears blank).
What am I doing wrong?
Thank you.