Ah, yes, that is potentially a stumbling block... port property is optional, if not specified, NodeBB will listen on port 4567. However the url property is the one that is referenced by NodeBB, and is used as the canonical reference to itself... so when somebody asks your forum what it is to be called, NodeBB will respond back with the value in url, so the port is required if you are accessing your forum with port number in url.
Spelling error in Hebrew
When the system sends a new user invitation there is a spelling error, how can I change it?
The translations are at https://www.transifex.com/nodebb/nodebb/, you can fix the errors there.
But I did not find the option of editing strings to translate
You need to create an account and go to the correct language file.