Different problem with esoterica methodology

Now that it seems to be that the cantrips chosen at first level are not properly calculating the spell DC. Per the esoterica description

“You become trained in the spell attack modifier and spell DCs statistics. Intelligence is your spellcasting attribute.”

For the character I have his INT is +4 and at 2nd level his proficiency is 4. Thus spell DCs should be:

10 + attribute + proficiency = 10 + 4 + 4 = 18

but the DC for void warp, for example, is 14. Looks like it is dropping the attribute modifier. If I had to guess, it’s adding my charisma modifier since that’s the default for innate spells. Esoterica’s rule overrides that.