0. I have a lot of blocks with zeros in the SkillPrerequisits block; they need to be removed. You have two of them.

1-2. Go to GameMechanics/Creatures/Creature/Race/Creature Name.xdb. Copy the same folder structure and the file itself; in the file, find the Abilities block and add the same abilities as the other one... or better yet, check out this guide; it shows how to modify a creature.
https://youtu.be/N1L52c2MSU8

3. Mods with the .pak extension are placed only in /data/, mods with the .h5u extension are placed in UserMODs. Mods with the .h5c extension are placed in UserCampaigns, and mods with the .h5m extension are placed in Maps.

The difference is that the editor can see .pak mods. The others cannot. And yes, don't name your .pak folder "data." To avoid conflicts.

And I'll bother you again. I wouldn't ask this question, but I doubt I'll find the answer anywhere else. Maybe you can help here too, because I don't understand anything anymore. Abilities. The "Abilities" block. It's missing. I watched the Remix guide on YouTube, re-examined a bunch of folders in the "data" archive, including creature files with characteristics and everything else. The blocks with abilities and skills are completely missing. Even the phoenix, from which Remix borrowed "resurrection" for the gremlin. It's empty. I downloaded another game build. The same thing. I just don't understand what I'm doing wrong. Are there any other possibilities? Maybe someone else has encountered this.