Yeah…the software currently has a lot of rough edges. Looking at the git repo, it looks like with all the new attention, things are getting patched up quickly.

One reason for the spinning icon is that comms b/w your brower and the server are currently handled through websockets, which is a bit of a clunky way of doing things with the negative side effects you are experiencing. The dev is fixing that in the next version, which should be released imminently. In the meantime, a refresh of the browser page usually fixes stuff.