Atlas Scientific EZO-FLO Embedded Flow Meter Totalizer

Update - Eventually found out the issue was with the flow sensors themselves that were not being made to spec for 3.3v. I've bought multiple cheep flow sensors that cost 10 to 20 dollars that all work at 3.3v with the Atlas Flow boards. Only Atlas's own flow sensors have problems. Through their support they did confirm component changes and issues during Covid shortages. They sent me another flow sensor that also did not work at 3.3v. So after ~200 dollars on their 1/2 flow sensor I never received one that worked at 3.3v. I'm upping the rating of the board since the issue was the sensor.For the last year these have not worked properly at 3.3v with all of their flow sensors. They need to be run at 5v to work properly most of the time. This issue has caused countless hours of troubleshooting to eventually come to realize that this thing is not working at the advertised specs.I've also gotten a few that will not work at all with the 1/2" flow sensor but will work just fine with the 3/8". I use most of Atlas' catalog of sensors and ezo boards and have hardly had any problems with them. It's just these EZO Flow boards that have caused a lot of trouble for me.