Can't post to AW because "the token has expired"

I'm having a problem that when i try to post from my phone i get a message saying it can't be processed because "the token has expired".

I tried clearing my cache and cookies, which fixed it for a couple of days, but then it did it again.

Anyone else had this problem?

I'm using Opera Mobile on a Samsung Galaxy S3 Mini running Jelly Bean, if any of that helps.

You mean you didn't get your tokens on the way in?

Security!