Hi Alexander,

Unfortunately i can't add new photos to old albums anyomore. Do you now what the problem is.

I believe you are trying to add new photos inside cover albums am I right? Easysocial does not permit users to upload a new photo via album page in these three albums since these albums are added automatically by default:
1) Avatar Photos
2) Cover Photos
3) Story Photos

If you try to create a new albums and save it, you can later add a new photo inside that albums anytime you want.

Also there is no button for adding photos directly to the stream, but as far as i remember it was.

Can you provide us with your Joomla backend and FTP access so we can check on the issue on your site?