I live in west Ireland and I had this issue which turned out to be rusty contacts in the charging handle. I use contact cleaner spray direct into the charge handle. Dodgy connectivity is a dead give away. The rubber cover traps water in the charge handle, I never use the cover any more.
My zappi says charging, charge delayed, charge complete with 0.00kwh added. I'm in Australia and the zappi importer, basically is a 1 star rated company, so I think that I'm just going to have to pay again for installation but this time a hypervolt.
Yea you've probably by this time got it working. I've just had mine installed and had the same issue. I disabled the CT Go into CT config. Bypass the code 0000 then turn the CT1 off/or on This might help someone else.
