I have had external access to my system for many years. About a week ago, the access stopped working. Access works within our home (on the local IP address), but when assessed externally, the various application will not connect. I have a dyndns account with hosts that allows my IP to change, but still allow external assess. I did have a secondary router in front of the OP2, but removed to see if that was causing an issue (allowing direct access to the HAI OP2. However, this didn't help. I have the specific ports open in my router and really haven't made any changes. Just wondered whether anyone could point me in the best direction to track down what the issue could be. Could my internet provider possibly changed something? I can go to the placed like http://canyouseeme.org and see that it indicated the port is open. However, the apps (HAI, Space, Haiku, etc.) no longer connect. Thanks for any help. SJ