The syntax is correct, spaces appeared after copying/pasting.You have some syntax errors: there must not be any blanks around the "=" sign...
Can you briefly describe the scheme using the reverse proxy for my task?You can try it with a http reverse proxy that rewrites the host header to the correct one (unitv.xxxxxx.net).
It's clear, but it's bad.Switch menu was removed recently because the hw accelerated bridges are the way mikrotik goes these days.
Where can I see "Overall stats", "Rx Stats" and "Tx Stats" for wired interfaces?