[AD + AP search help doesn't work for me]

The help function does not work at all for me. The window opens and the only thing that appears is a box with a question mark and "The selected topic is currently unavailable." If I type anything in the Search box, all I get is the spinning beachball. This is very aggravating, as I recently purchased Affinity Photo and I'm trying to understand how to do the simplest things. For instance, I can't figure out how to rotate the image at an arbitrary angle; all i can find in the menus is rotate left or rotate right, which rotates to some fixed angle that doesn't seem to be able to be changed.The program looks great, but this is really annoying. Running OS X 10.11.4 on a 2011 27" iMac.