Didn't pick up new flickr account

I don't see the issue here, the lens listens to the signal even if the account is added when it's running.
Investigating.

Michael, have you tried with a Facebook account?
Which version of the package are you running?

Facebook didn't immediately appear either. After a reboot, flickr photos did appear.

I'm using version 0.2.1-0ubuntu1.

Would you mind giving me the output of:
killall unity-lens-photos && /usr/lib/unity-lens-photos/unity-lens-photos
...with at least one account (Flickr or Facebook) activated and after running a search in the lens?

Also, when you have several accounts activated, there should be a "Sources" filter looking like this screenshot. Is it visible ?

Output after a search with flickr enabled is below [1]. I also have sources visible and working now. Again, everything is working now.

This bug was only evident immediately after installing the lens and then setting up a new (first) online account. Do you know how to get back to that state, so I can repeat the bug?

[1]
logging in
Added account <AccountService object at 0xa0a55a4 (AgAccountService at 0x9e3bc28)>
    This Computer enabled : True
    Flickr enabled : True
login finished
Search changed to ""
Facebook : new search
Flickr : new search
Search changed to ""
Shotwell: DB update detected
Facebook : new search
Flickr : new search
Flickr : Added 50 results to category 0
Flickr : Added 50 results to category 1
Flickr : Added 50 results to category 2
Search changed to "p"
Facebook : new search p
Flickr : new search p
Search changed to "pi"
Facebook : new search pi
Flickr : new search pi
Error: Unable to get results from the server
       1: Cancelled
Flickr : Added 0 results to category 1
Error: Unable to get results from the server
       1: Cancelled
Flickr : Added 0 results to category 2
Error: Unable to get results from the server
       1: Cancelled
Flickr : Added 0 results to category 3
Flickr : Added 0 results to category 1
Flickr : Added 0 results to category 2
Search changed to "pizza"
Facebook : new search pizza
Flickr : new search pizza
Error: Unable to get results from the server
       1: Cancelled
Flickr : Added 0 results to category 3
Flickr : Added 0 results to category 1
Flickr : Added 12 results to category 2
Flickr : Added 50 results to category 3

"immediately after installing the lens", without logging out or restarting Unity? Unity doesn't automatically displays new lenses, it needs to be restarted.

Nevertheless, nothing specific to do to return to the first state of the lens, it doesn't store any configuration (except a backup of Shotwell database in ~/.cache/unity-lens-photos). Killing unity-lens-photos and removing accounts is enough.

It did start the lens in Unity without a restart.