The fact that your losing Alexa control (communication with the bridge) makes me think maybe you have your PC going to sleep (hibernate mode)
You might check the HA-Bridge site to see if this issue has been reported.
This morning decided to put Alexa near camera with two way audio. Now I can hear Alexa 's response and see the results at the same time. So now I can talk to Alexa from anywhere.
Awesome! Nice thinking outside the box!
If Alexa could run AHP macros then I could turn Xp pro PC off and remove some apps, like x10 commander and AHP smartphone off my iPhone.
It can trigger AHP macros if they reside in the cm15 or AHP is on the PC that Alex10 is on.
Alexa fires of several of my AHP macros and even PCC user commands using the HA-Bridge and Alex10.
I can control my IP cameras with Alexa.
I get told when a door or window is opened. (this is PCC talking threw the Dot , triggered from a AHP macro)
I turn all my lights off with a single "Alexa All lights off" command.
I can turn macro flags on/off
I can run my good night (AHP) macro
Since sending security commands isn't possible I can't trigger any security macros. However I have to admit I haven't played with that aspect very much.
Since Alex10 only creates On/Off/Dim scripts and HA-Bridge can only send those, your macros must be triggered from one of those in order for Alexa to trigger them
I've not tested running the HA-Bridge from the internet but it should be possible with setting up port forwarding in your router.
You'd have to experiment with browsers . My old Android browser doesn't display HA-Bridge options just like Windows IE.