The new tanks with the OPD will reduce gas flow to a trickle if you turn on the gas at the tank with a burner valve open even a little. It's a safety device to limit gas flow if there is a break in the line or another leak. Try turning the gas off at the tank, make sure that the burner valves are closed completely, then disconnect the line from the tank. Leave it off for a few minutes, then reconnect and try lighting it again. If this doesn't work, check for leaks first, then checxk for a blocked line or try a different tank.
If you don't like the food, have more wine