Hi Tom,
at the moment we don’t allow multiple redirect uris.
If it helps handling your users’ flows on the different domains, you could add some information in the state parameter, but that depends on your specific scenario.
Ok thanks. We will get the callback at our main server, we have a plan that seems to work. Note that a comma separated list of callback URIs works on other platforms if you are looking for a way to get them in without major ui changes.