Communication error "Host not found"

My Outsystems version is 11.

I can't access my app.

My personal environment is awake.

I'm trying to connect to it, but the message saying "Host not found" is popping up.

Any ideas?

I'd appreciate it if you could tell me why this kind of thing is happening and what's my next move.

I look forward to your help!

Hi Tsubasa,

Check out this documentation which was written for your kind of situation. 

If the problem persists, only thing to do here really is contacting OutSystems support.

Hope this helps.