Cant post in Kubota Forum

[OrangeB2400]

Hello I'm using an iPhone 5s and can't post a new thread on your mobile app. When I select start new thread it comes up with a menu button at the bottom that says select a prefix and seems to lock up at this point.

 

[OrangeB2400]

For some reason I can post in this forum however in Kubota owning and operating I can't.