#1 Unfortunately it is a known issue with notifications, though the good guys are working on this, since the last update of the board software notifications have worked intermittently and fail to work in some cases without an apparent reason, see:
#2 The issue has the same reason (stupid board software) but it should be "browser specific", namely you must be running some version of Explorer, which is known to create these issues (see the same thread above about board software bugs).
Thanks Jaclaz, you were right on both counts. Copy & paste works fine if I use Safari as my browser - and (minor miracle) I've suddenly started to receive notifications this morning! Let's hope it lasts!