aMember Wordpress Widget Not Logging on but can see an existing logon

Hi All

I have the aMember Wordpress login page here:

http://www.jigsawtrading.com/live-trade-room/

If I try to log in, I can enter valid login details (or invalid ones) and when I click the "Login" button it always reverts to my login page at https://members.jigsawtrading.com/login

Any thoughts on why it's doing this?

Thanks

Pete

Just to add....

If I log on thru aMember, then go back to http://www.jigsawtrading.com/live-trade-room/, I can see the user name & subscriptions - so Wordpress knows when aMember is logged on.

Then I click "Logout" on the page and it just goes to the "after logout" page but doesn't actually log them out. Only bu going to aMember can I actually log out.

Cheers

Pete