I have checked on GDS. Even that A346 version with just aisle seats in the first J row (i.e. 5H is first row) has three rows of F. I have never come across a A346 version with only 2 rows of First class.
If they have told you no nonsense I believe your flight is operated by a A330-300. These have 8F/32J/191Y config ... 2 rows of F, first J seat on the right is 5H. No other EY aircraft has this config.