Unfortunately, it's not only an iPhone issue.
Up until last week, my Android Samsung Galaxy S2 was working fine. Then it started to give my the "your_name is missing" error message when trying to submit a reply to the post.
Now, when I try do do certain other things, like get to my profile, or someone else's from a topic, I get a message that says that I need to login before doing that, even though I'm logged in. I humour the program by logging in, but it just bounces me back out the same message.
I've have a few other issues, like remaining on the same page, when I try to back up, etc. Most web browsing works, and links in the forums work.
For me, the problems appear to have started after the last Tradgang upgrade.