When you use the plugin to send new photos to Alamy using the "online upload" method, it tries to allocate a new "upload session" in exactly the same way as Alamy's own online tools do.

Errors here should be extremely rare and will usually be down to a simple networking problem, so as a first step, please just wait a while and try again. If you can log in to Alamy's website in a normal browser, the Alamy-Lightroom Bridge should be able to get a new upload session ID.

If this fails repeatedly, please let us know with as many details as you can provide, ideally including a screenshot of the actual error message and the plugin's log file from your "Documents" folder.