SAP Build App -BTP Connection to "XXX" established. Response returned: "401: Unauthorized"

[LeandroRibeiro14]

I did this very nice video " Access Demo SAP APIs for SAP Build" (https://www.youtube.com/watch?v=11TUQgQi-9k) to create an app using a Business Partner sandbox API and worked fine.  I could see the data when lauching the web app. Really nice indeed!

But one day after I could no longer see the data when oppening web preview.

In the Build App, in the data section, I can see my integration (BTP destination), install it,  enable entities and when executing "browse real data" it works perfectly.

But when I make a binding with a data variable, and launch the web app, the data no longer appears.

One point is that, within the BTP, when I try to test the destination (check connection), the system returns a message of :  Connection to "demoApp_BP" established. Response returned: "401: Unauthorized"

I have already cleared the browser cache, reinstalled the Build App, deleted and created a new subaccount in the BTP, but none of this worked. 

OBS:  I put all the role colections on my btp user ( Custom IAS tenant and Default identity provider  users) and i m loggin in SAP Business Accelerator Hub

Could someone please help me?

I really can't see what is different from a day ago when the data was returned ok.

Thanks.

Here some of the app

when oppening web preview = no data