We do have a holiday sale of 20% off licenses, upgrades, and installations going on right now, so take advantage and save some money if you are planning on purchasing soon. 🙂
XenForo stopped providing us with a copy a long time ago, sadly.
I would suggest you try this: https://xenforo.com/community/threads/arrowchat-facebook-style-chat.66365/post-926955 That will most likely work with Redis.
I know a few people have asked about the "loading animation" every time ArrowChat makes a request. Thanks to @hello2029, I was able to fix this on his/her installation. That fix will be available to everyone in the next update, which will be out shortly.