I have just installed Lightroom having started a subscription to Lightroom and Photoshop Photography plan and Lightroom tells me it is having trouble connecting to the server and to try again later. I have uninstalled it and reinstalled it and keep getting the same answer. Lightroom CC is working fine on tis machine (though it is also not showing it has access to the Lightroom Ecosystem). Lightroom mobile is working fine on my iPad and syncs with this machine when I am logged into lightroom.adobe.com.
I am on a MacBook Air M1 version. I did find a similar thread about a year old and it does not look like an answer to the issue was ever provided.