Problem setting up plugin (Auth problem)

Im setting up a plugin containing several Api calls that need the same Authentication parameters (there are two).

In the Shared Menu, I’ve defined the 3 following dynamic values:

Initializing Apis Calls is all Ok.
I go to action to test my plugin and provide the 3 values in the plugin tab:

But when I call one Api ( a simple GET Api) from the test Bubble App, it doesn’t work!
I get message:

image

It tells me the token is expired, though i use the same tokens while initializing Apis in Plugin.

What could be the problem? Any help Please?