Unable to connect LinkedIn social media account

I am not able to connect my LinkedIn account to Adobe Express.

After clicking the 'connect'-Button for LinkedIn, a new small window opens, but after inserting my login information and some loading time a "502 Bad Gateway" error message (attached) appiers in the window.

Already tried to reopen, reload the site.

Connecting Facebook or Instagram worked without problems.

Further Details (if relevant):

App: actual web version of Adobe Express (same problem in Google Chrome and Safari)

System: Mac OS 14.0

Language: German

Is there a fix for that?

Thanks for your help!