the update 1.8.1 its ok, but it the same problems.
We just tested again and didn't found any issue. Please use a private session of your browser and test it. If it works just delete all caches and cookies of your browser.
sorry but it s not possible to connect to the wpforo.
I just try again and not connected
For the moment itsnot possible to test, i wait 22h : too exceded