Hello Penny (@Duchess), our apologies for this issue with the emontx not supporting pulse counting properly without an ACAC adapter plugged in as Paul described.
I have developed a modification to the firmware this morning that fixes this issue. I have uploaded this new version to the firmware github repository here: GitHub - openenergymonitor/emontx3 at battery_pulsecount - it’s in a different branch at the moment called battery_pulsecount.
You’re very welcome to send the EmonTx back to us if you prefer and we can upload the new firmware. Alternatively, you can upload the firmware yourself using the Arduino IDE or platform IO. There are instructions for platform IO using linux here: emontx3/firmware at battery_pulsecount · openenergymonitor/emontx3 · GitHub