Just a couple things I've noticed since the upgrade. If you set up push notifications and the app, just be aware, if you restart your device or log off it completely, you will have to reenable push notifications again in your preferences.
Now that I have push notifications coming on my phone, I don't want or need email notifications, but when I went to turn them off in preferences, I discovered that didn't stop them. Because Xenforo is weird, you have to go to the Forums page and select 'Watched'. Once you're there, you have to select the checkbox next to each thread (you can do a page at a time) and then choose the option to disable email notification. You may have 100 pages of watched threads, but if you'll do the first few pages, that should take care of it. Xenforo doesn't give the option for either us or you to disable emails.