Please be sure to check the e-mail address that you are sending to when responding to e-mails sent from bersatalk.com. In most cases, PM messages received in e-mail are sent from administrator@bersatalk.com, so if one simply clicks reply then the response is going to go to an administrative mailbox that is not monitored by a human.
At the end of the e-mail message sent, there is a link to click on to reply. This should be used to reply to PM messages instead of replying in e-mail. The reason for this is to protect peoples e-mail address should they choose not to share it.