Well, dave, theres a bunch of bugs but the MOST important ones are that we cannot check our notifications. (iOS APP.) If i click "New mention" or "New Post Quote," nothing happens. It just stays the same. Also, you can't check your vms that easy, usually you can just check it by going to your notifications but you can't click on that either on the Mobile App. The only way to check VMS is to go to My Profile. ALSO, you can't post vms on other peoples' walls.
Mentions/Quotes mod are made by someone else. The app is made by vBulletin. So, it won't support those mods. It'll only support the default vBulletin features.