The online permitting system that the town put in place just a few months ago appears to already be paying dividends, officials say. Revenues taken in by the New Canaan Health Department since the town began switching to the OpenGov platform in November are up 30%, according to Health Director Jenn Eielson. The reasons for the increase include that “I’m collecting the money right off the bat” and “nothing’s sneaking by anymore,” Eielson told members of the Board of Selectmen during a regular meeting Tuesday that was dedicated to the municipal budget. “You see everything,” she said during the meeting, held at Town Hall and via videoconference. “And again, collecting the fee up front is huge because you’re doing the work, where before they were collecting on the back end.