[Plugin: BuddyPress] Problem posting to forums

[nigdowser]

I have a member, registered and with a site of her own, who cannot post to the forums or reply to a topic. The error message coming up says
‘You cannot create new topics at this time’ or
‘You cannot reply to this topic’

As far as I can see, there is no difference between her and other members who also have sites and who can post.

What could I be missing here?

Any suggestions gratefully received!

http://wordpress.org/extend/plugins/buddypress/

[@mercime]

Which forum are you referring to? The Group Forums or the Sitewide Forums (bbPress plugin 2.+)?

[nigdowser]

From the screencap which has been sent to me, it looks like the Group Forums? Would the answer make a difference? (Apologies if this is a dumb question.)
The screencaps are below
Screencap1
and
Screencap2

[@mercime]

Although on a custom theme, looks like you’re referring to the bbPress plugin. Please post at http://bbpress.org/forums/