I've missed something and I don't know what it is. With that configuration I can access my network and other machines without problems.
Maybe it is a network configuration problem. The first thing I would do is add the following line to the stack in the environement section:
- ALLOWEDIPS = 0.0.0.0 / 0
It shouldn't change anything, in theory it's the default setting but it might help.
If it doesn't work I would try to change the internal subnet from 10.13.13.0 to a different one. Could be 10.13.14.0