There’s been no change to kill remote access from PMS. It’s more likely there’s been some change to your remote access „situation“. There’s a lot of aspects outside your control, e.g. ISPs can apply filters or change their backbone.
I recommend you review your router config.
If you haven’t done yet, go for a manual port forward instead of using UPnP, and test if the router & forwarded public port are accessible from outside your home network (e.g. using a service like canyouseeme.org).
